It's easy. It's free. You can boost your wireless signal and throttle your bandwidth, and if you somehow mess up and brick your router, you can recover everything. This is a great hack, but unfortunately, it only works for Lynksys router, though it is worth it to return your old router and by a Lynksys.
What you'll need:
1. One of the supported routers.
2. The generic DD-WRT v23 SP1 mini firmware version
3. The generic DD-WRT v23 SP1 standard firmware version
Details for getting the DD-WRT are at the article.
Click here to read the article.