Rooting the Android

I also just got the Android. I was a little surprised to find out that AT&T limits what apps you can install. Why limit the openness? There are some cool apps like shark and wifi tether that require root access. The HTC Aria I got from AT&T didn't come with root access. After trolling some forums i thought it might not be worth the effort... until I found this website: http://unrevoked.com/
You download the file, connect the phone, and it will put the phone in recovery mode, flash an image and viola - you have root! Once its rooted you can install all wifi tether & shark and any other root app.