I swapped the location of two desktop PCs (one is XP/SP2, the other is W2000). For a month, they communicated fine. Since swapping them, they say they can't see each other ("network path was not found"). They can though - I can hear the W2000's hard drive working when I try to access it from the XP unit. My notebook (XP/SP2) can access the shared folders on both the XP and W2000 machines and they can access it. I'm using a Linksys Wireless Router (the Notebook connection is wireless and the desktops are connected by ethernet cable) All of the PCs can access the Internet. I have not changed a thing other than physically move the units (they're 12 feet apart). I didn't move the mouses, keyboards or monitors though. Thanks for any input, John