I am wondering whether a wireless router is going to increase my lag in games...and if not significantly, what is the best wireless router to get? We only have two computers to hook up to the network.
In games you probably won't notice any more lag than you would have on a wired network, unless your wireless connection is really really weak.
As for a good cheap router, anything from Linksys or D-link or Netgear should be fine.