On a Priceline reservation I booked in May, I had central HHonors add my number to my PL reservation (I had to give them the Hilton resv number NOT the priceline resv number). They informed me, at first, that I would not receive benefits and they didnt think it would work. But I told them that I knew I wasnt going to receive squat, but I just wanted it added so I would be able to see it online when I log into my hhonors.com account, so it would be easy for me to "visually" keep track of all my reservations. It worked. I was even able to do the Gold online checkin and select a room upgrade. This was back in May.......hopefully it will work again on my next booking (fingers crossed). Hope you have luck with yours, let us know if it works for you. I could of just gotten a great CSR or it could of been a computer glitch (online checkin part).......