unless theres is a crack or stress spots, just get it trued. bring it to your LBS (local bike shop), they'll do it for 10-15 bucks.
road bike rims can last for years, unlike mountain bike rims which are usually replaced every 1-2 seasons (depending on how hard you ride).
oh ya, and riding without brake pads isn't such a good idea. not only is it dangerous, but you risk damaging the rim further because the bare brake could rub up against the rim