If you have AOL, the phone rates to Hong Kong are cheap. Dial in through there and you will get past the block. I am in China right now. Hilton sites (all the US based ones) have been inaccessible from all computers on dial up and broadband that I have used in the last week.

The only benefits I have are a file from 2003. Others can update:

Diamond VIP Membership

To Qualify: Earning Diamond VIP status requires 28 qualifying* stays or 60 qualifying* nights in a calendar year at HHonors hotels. At Scandic hotels, only qualifying nights count toward VIP status.
Beginning January 1, 2003, every HHonors Base point you earn starting this date will help qualify you for VIP status. You'll earn Diamond VIP status after earning 100,000 Base points in a calendar year. Of course, you can still qualify based on your number of qualifying stays or nights. Effective January 1, 2003, stays at Entertainment and Encore rates are no longer eligible for stay credit toward VIP status.
*Qualifying Rate stays are stays at all rates except wholesale/tour operator packages, contracted airline crew rates, complimentary or barter rooms, stays on NET Group, Series Group or IT Group rates, contracted Entertainment or Encore rates, stays using airline percent-off award certificates, or stays booked via Priceline.com, Hotwire.com or similar booking channels where the hotel brand is unknown at time of purchase.
Point Bonuses: Earn a 50% bonus on all HHonors Base points credited while you are a Diamond VIP.
Guaranteed Reservations availability: Reservations availability is guaranteed to Diamond VIPs when reservations are made before midnight hotel local time, 48 hours prior to intended arrival. Guarantee applies to only one room occupied by the Diamond VIP member and to reservations made with a valid credit card. Please note that this guarantee does not apply to rates - if a rate for which you are normally eligible is not available, your reservation will be subject to the hotel's prevailing rate for the accommodations requested. Please also note that in some instances, the guarantee may be subject to booking conditions such as length of stay requirements. Also note that in the event you do not arrive as scheduled and do not call to cancel and obtain a cancellation number, your credit card will be billed for one night's room and tax. Additionally, the reservations guarantee is not available during specified Extraordinary Demand Dates at certain hotels and is not available for reservations booked online. To make reservations under the Diamond VIP reservations guarantee, please contact our Diamond VIP desk at 1-877-4HHW-VIP in the U.S. and Canada. Outside the U.S. and Canada, call the Hilton Reservations Worldwide office nearest you.
Enjoy HHonors Hotel Rewards without Blackout Dates: Diamond VIP members may redeem points for HHonors hotel rewards nearly any time, with the only exception being during specified Extraordinary Demand Dates at certain hotels. To make reservations for your reward stays, please contact the Diamond VIP desk at 1-888-HHONORS.
Upgraded Accommodations/Amenities: HHonors Diamond VIP members are offered upgraded accommodations or amenities at HHonors hotels. The type of upgraded accommodation or amenity varies by type of hotel, as follows:
• At US Hilton hotels, and at Conrad and Doubletree hotels with Towers or Executive Levels, Diamond VIPs will be provided with a guest room on the Towers or Executive Level floor, whenever possible. In cases when Towers or Executive Level accommodations have been fully booked, Diamond VIP members will be offered the use of the Towers or Executive Level lounge, including complimentary continental breakfast each day of the stay. At hotels without a Towers or Executive Level, Diamond VIPs will receive complimentary continental breakfast. And in hotels at which a complimentary breakfast is a benefit for all guests, Diamond VIPs will be offered a special amenity as an expression of our appreciation.
• At Hilton hotels outside the U.S. with Executive Floors, Diamond VIPs will be provided with a guest room on the Executive Floor, whenever possible. In cases when there are no Executive Floors or where Executive Floor accommodations have been fully booked, Diamond VIP members will be offered a complimentary continental breakfast each morning or an alternative special amenity.
• At Hilton Garden Inn hotels, Diamond VIP members will be assigned to best available room with complimentary continental breakfast throughout the stay or a $5.00 coupon* for use during stay at the Pavilion Pantryฎ (excludes alcohol) if upgrade to a suite is not possible. *Coupon cannot be redeemed for cash.
• At Embassy Suites hotels, Diamond VIP members will be offered "The Embassy Touch", including a light snack on night of arrival and a terry robe.
• At Hampton Inn and Hampton Inn & Suites hotels, Diamond VIP members will be offered "The Hampton Touch", including a light snack on night of arrival.
• At Homewood Suites by Hilton, Diamond VIP members will receive a welcome gift.
• At Scandic hotels, Diamond VIP members will automatically receive the best available room, if available when booking.
Complimentary Health Club Privileges: Enjoy complimentary access to the health club or fitness center during your stay, at hotel owned and operated facilities.
VIP Only Rewards: HHonors Diamond VIPs may choose from an exclusive selection of rewards at special VIP-only points levels. For complete details, click here.
RewardPlannerSM Service: Whether you're traveling for business or for pleasure, this valuable service takes care of all the details. With just one telephone call, you can leave everything to RewardPlanner. They'll make all the arrangements for all of your reward and business travel. The HHonors RewardPlanner service can make reservations and request reward certificates for your airline, hotel and car rental travel - both for HHonors rewards, as well as travel rewards from any other travel program in which you participate. The HHonors RewardPlanner agents are travel program experts and can assist you in planning your travel around blackout dates or other restrictions of your frequent traveler program. Best of all, annual RewardPlanner service is available to HHonors Diamond VIPs for the special price of 20,000 HHonors points. To enroll, call the HHonors Automated Account Inquiry System 24 hours a day, toll-free from the U.S. and Canada at 1-800-552-0852 and request FaxBack document #212. Outside the U.S. and Canada, call your nearest HHonors Customer Service Center.
Additional Benefits when staying at Scandic hotels:
• 100 SEK Food & Beverage Voucher: You receive a restaurant voucher worth 100 SEK** for each night spent at Scandic hotels, although not in connection with a reward night. The voucher can be used for food and beverage at the hotel.
• 25% Discount on Food & Beverages: As a Diamond VIP member you have a 25% discount on food and beverage for up to 2 persons Monday-Thursday and up to 6 persons Friday-Sunday.
• 50% Cinema Discount: Diamond VIP members get a 50% discount on Scandic hotels Cinema.

**Or equivalent with other local currency.