Windows 7 Readynas not in Network

same issue. reformatted, but kept the same OS -- win7 enterprise -- and cannot now access any of my shares. i get a permissions error. readynas is working fine as a mac on the network can still access it fine. some windows update issue? tried disabling firewall, changing workgroup, mapping a network drive, etc. lots of rebooting and no resolution from an hour on the phone with the wonderful folks at netgear. arg. thoughts?