This is yet another twist on the same problem that i've diligently searched the forums for solutions. I've tried everything suggested, nothing seems to work (permanently) so I'm now asking for help. The Setup: cable modem -> wrt54g -> wired connection to desktop ~~wireless to laptop The Culprits: Desktop -WinXP Pro SP2, fully updated, -NVIDIA nForce MCP Networking Controller -assigned address of 192.168.1.50 Laptop -WinXP Home SP2, fully updated -Dell Wireless 1470 Dual Band (i.e. Broadcom chipset) -dhcp acquired address of 192.168.1.10 The Situation: I'm trying to share a drive on the desktop with the laptop. I *have* accomplished this at least twice, once with the laptop wired, once wirelessly last night. Turned off the PC for the night, and now I can't get it back. I've run the networking setup wizard on both numerous times. I've fiddled with nearly every setting i can find. Internet works fine on both. No firewalls, windows or otherwise. Desktop can ping router and laptop. Laptop can ping router, cannot ping desktop. I used ethereal to check what was going on with that. When the desktop pings the laptop, all is well. When the laptop attempts to ping the desktop, the packet will leave the laptop, but never arrives at the desktop. Both on MSHOME, both uniquely named. only using TCP/IP. The desktop can see both machines in the workgroup, cannot access laptop (network path not found). The laptop can only see itself (has been able to see desktop before, but again network path not found). //compyname doesn't work on either, neither does //192.168.1.x All the settings in the router are fairly normal, from what i can tell. I've tried, and retried everything i can think of. I got it to work last night, but I have no idea how. any ideas?