If I was using it for gaming, I'd probably definitely do something like that. But I'm with RoD. No issues with my wireless, even streaming Netflix. And my wife uses her laptop all over the downstairs and my router is upstairs. No problems.
I also second the statement about the right hardware and the right configuration. My Linksys died a few years ago and I went through 2 others (one netgear, one belkin) and both of them sucked balls. So I went back to Linksys. I got the one RoD recommended (WRT54G?) with DD-WRT preinstalled off of eBay. I changed some frequencies and adjusted the settings somewhat and haven't had trouble since then. It runs perfectly.