How to get my networked drives to also work on Mountain Lion? I have a networked drive on the XP side of my MacBook. I use a VPN and then can login to the drive. Nothing too special going on. I believe the server uses Active Directory.

There isn't a ton of info I have to enter. The \\server.local.blah blah
and some IP info.

I have never been able to get these to mount or show up and authenticate on the Mac side. I can use the network connect to login to the VPN, but directory access has always been a no-go.
If the VPN is working and the same as on the Windows side, you should be able to enter the server details in the Go > Connect to Server (⌘K) dialog in Finder. If it's a standard Windows file share, just enter in smb://server.local.blah and it should connect.

However if that doesn't work, you'll need to provide more details on how your VPN and servers are set up.