Can't access one XP Pro computer
I have 4 computers. Two with Win7 and Two with XP Pro. My XP machines can access all the others including the Win7's. One of my Win7 computers can access all but one of the XP machines. All computer workgroups are the same and all the names are correct. Any ideas why one of my Win7 machines can't access one of my XP machines? All are hardwired thru a router, not wireless.