I’m unable to connect to one of my servers from Win 7

I have a Win 7 machine that whenever I try to connect to one of my servers, I get a Windows Security window asking me to enter a network password. When I enter my credentials, it tells me access is denied. I have several servers on my domain, and I can connect to all the others using remote desktop or just browsing the network and clicking on a share. The one that is causing the problem is one that I can connect to from any of the XP machines that I log in to. The shares have my account with full control. (I’ve even used the admin account)

Any ideas? Thanks