There are already some nice guides that show you how to access Windows 7 shares from a XP PC. Unfortunately most of these guides recommend turning off passwords and assigning Everyone Full Control. It is easy to add a bit of password security to all of this: 1. Create matching accounts on each PC in the workgroup. ie. user1, user2 etc... 2. Create a share on PC1 (Windows 7) and assign the Everyone group Full Control on the share under advanced sharing permissions. 3. For NTFS permissions, rather than give Full Control to the Everyone group, give user1 read-only, or modify. 4. Map a drive from PC2 (Windows XP) to the share on PC1 (Windows 7), \\PC1\share 5. Make sure that when you map the drive you click the link to "Connect Using Different Credentials " and specify PC1\user1 6. You should now have a mapped drive limited to Read-Only, Modify, or whatever level you set in step 3. The key to this is, where XP would just realize that you were logged on as User1 on the other machine and pass on the currently logged on user credentials, Windows 7 needs you to prove that you are authenticating with a local user account. In Windows 7 you can do that using the computername\username format. I hope this helps someone because I've been doing this for years an managed to get myself stuck on this issue. Mersild