IBM NetFolders

I Have a IBM 520 that allows my pc’s to connect to network shares. These shares are not accessible on MacPro. I can get to these shares on my PowerMac G5 using Microsofts UAM. I was hoping to avoid this on the new MacPro. I also have Parallels 5 desktop on the MacPro. I have also tried using smb:\\ip\folder. and nfs but would not connect. When I used smb: I was able to connect but didn’t get all the folders in the directory and the share disconnected from my mac after 60 seconds.