I have a local network of 3 PCs hard-wired to a router and modem to cable internet. All 3 now run XP but one ran Vista until last week, when I gave up on it and installed a fresh copy of XP over it. I had set each PC to share their resources across the LAN, which worked fine until I overlaid Vista with XP, probably because the resources on the Vista system were named 'Vista C Drive', 'Vista Floppy Drive', etc, and are now named 'CAM XP C Drive', etc. Not only can I no longer access the 'CAM' system (running XP) from my other systems (via My Network Places under WIndows Explorer), but if I try to do so, Windows Explorer freezes the PC trying to do the access. I can't close W.E., and can only Shut Down via the Vulcan Nerve Pinch. Any ideas to get over this problem will be greatly appreciated.