Windows 2000 - Permission Problem

[FROsTByTE]

3 PCs, 1 Server. Very basic network using a D-Link switch.

PC1 - Windows 2000 Professional w/ Printer.
PC2 - Windows XP SP2 (Updated)
PC3 - Windows XP SP2 (From CD)
Server: Windows 2000 Professional

All PCs set to LAN IPs, 192.168.1.xx.

All the PCs on the network are pingable. So basically the network part is correct.
Here comes the problem part.

When I try to share files on those PCs w/ Windows 2000(PC1/Server) Professional installed, I get "Access Denied" error. Even tho the Permissions(Right Click > Sharing > Permissions) are granted I can't access files or the printer.
I get this error ONLY from the PC2 with the updated SP2, THO I can access the printer and the shared folders from the old SP2.

All PCs/Server can browse each other except the Updated SP2.

Thanks in advance.

 

[ktwebb]

If your running pro on that machine and have simple file sharing turned off check your NTFS permissions (Security tab). Most restrictive wins

 

[feigned]

Check firewall settings? That's all I've got.