My PCs used to be in the basement, wired to our Linksys router, powered by a cable modem. When I needed more room to start my business, I moved all of my equipment upstairs where my fiance, T, completely transformed an unused room into a beautiful office for me.
Since T is an avid online gamer (Medal of Honor,) we decided to let his PC stay wired to the router, and I would go wireless upstairs. I upgraded our 802.11b router to a 802.11g "Extreme" router and I also bought a Linksys Range Expander to help boost the signal. Unfortunately, I'm not happy. Wired is better...much better.
The next step is to call an electrician to run cat 5 cables from the basement to my office. I need this done ASAP. When you get used to a certain speed, you never want to go back to being slow. Anyone that has gone from dial-up to broadband knows what I mean.