^ Pick up a 2Wire router (Telus used to give 'em out for free to ADSL contract suscribers) for like $15 on Craigslist. You get Wireless G, and the thing is pretty robust I must say.
Because a lot of people upgraded on their own, these particular ones are a dime a dozen on the used market.
Wireless N may technically give you better range, but personally I find that G is more than enough for the entire house.