Vista 64 network sees but can't use XP computer

I have a new computer with Vista 64 with a wired network to my XP computer.
The XP can see and read files on the Vista 64 computer but the Vista 64 sees
but will not let me access the XP computer. It reports that the SharedDocs
is available but the user is denied access. It also notes I may not have
permission.

I am the only user, and I have administrator rights. The user account
control is turned off. I am using a 2wire router for the network. Both
computers access the internet fine.

I had no problem before when both computers were on XP .

Help please,
ravritch RemoveThis @snet.net