Strange wireless intermittent problem

To start: NO VIRUS, SPYWARE, or MALWARE, is on my computer.

I am connected to Belkin Wireless G router via a Dell Vista Premium laptop. My main computer, a desktop with XP, and lastly, my Wii.

I’ve disconected the Wii, the Desktop, reset IPs, reinstalled software, reset the router, removed and added different kinds of security, and nothing changes.

Both of my wireless devices remain connected, but seem to suffer some data loss. It isn’t noticeable when just doing regular web surfing. However I cannot fully download, or keep connected to games that require a constant data flow.

I’m thinking its the router, but before I return it I thought I’d ask if there was something I could do.