printer shared can t print documents

Hello,
Juts installed Vista beta 2 on two pcs (64 and 32 bits versions). The installation works fine !
Vista 32bits with a usb printer (HP PSC 1200) shared connected with a wireless connection to a router Vista 64bits with a wired connection to the same router. Both have private network and are in the same workgroup.
On the 64bits machine I can see the printer on the other pc, I can add it to the printers but I can't print. In the printers window its status is "Access denied, unable to connect".
I miss something ? Should I set up user from each machine on the other one ?
-- Matthieu Guyonnet-Duluc http://spaces.msn.com/members/matthieu