Network Problem

Hi All.

I have 4 PC’s, 2 hardwired to my router and 2 connected wirelessly. Within Windows Explorer I can see all the PC’s in My network places\Entire Network\Microsoft Windows Network\Workgroup but when I click onto one of them I cannot see the C drive. I can see all the other PC drives from all the other PC’s. Also when I connect remotely to this PC I can see the PC name but need to connect with it’s (static) IP address. The only difference with this PC is that it is connected to my XBOX with a crossover cable but even with this crossover cable removed it is still the same. Any help would be much appreciated.

Cheers.

Steve.