Ask your local travel agent if they will allow you to tap into their CRS system (you pay for the monthly fee). If you allow them to ticket your reservations (by Queing them over) they might just let you.
If you can't find a travel agent who is willing to do this, please email me and I will set you up with my travel agent who is willing to provide this service.
One word of caution, some airlines (like NW) are getting very upset with bogus bookings or past ticketing date reservations. If you make a reservation and keep it active w/o either ticketing it or canceling it, the airline may send you a debit memo.
The hidden benefit to booking travel this way is travel agents send in their reports every Tuesday. If you book a nonrefundable ticket, you can always void it out as long as it is before the next Tuesday.
Full blown Sabre is not very user friendly. It is very powerful but it takes awhile to learn all of the codes.
Let me know if you have any other questions.