Hi I have PC1 and PC2. PC1 is directly connected to an Access Point via ethernet (D-link 2100AP) and has been configured fine and can access the internet. PC2 uses a wireless usb adapter to connect to the internet. The router is a netgear DG834G and provides DHCP. PC1 ip: 192.168.0.51 Access Point ip: 192.168.0.50 PC2 ip: 192.168.0.2 PC1 and PC2 can't see one another! They can't ping each other. PC1 can ping the wireless AP and so can PC2, just not each other. Both of the PC's have windows firewall turned off. They have comodo internet security, but even when I disabled that, it doesn't work. Could this be the router firewall? If so, does anybody know if there's some kind of advanced settings I need to modify? Thanks Yash

The PCs need to be on the same workgroup. Start -> computer -> right click -> properties go in there and change the computer name.

I'm sorry leave the name alone, change the workgroup so that botch computers are on the same workgroup. Unless the computers are on a domain, in which case they need to be part of the same one.

They're both on the same workgroup actually. They're both on 'WORKGROUP'.