What would I need and how expensive would it be to find a way to get my two PCs to stop disconnecting from the internet every few hours, all because of my router? It seems even a nice 'quality' router with a bunch of five star ratings still disconnects a lot. My ISP hasn't changed, and before I had a second PC the single computer hooked up directly the 'net never had trouble.

I heard something about setting up a server instead of using a router but I'm not sure on the costs of that. Would I need to buy a third PC which would act purely as a server-router-type-thing or, uh... what? *dunno*