Big No-no. Help

[djpaul]

Just when I finaly got the rom I love, all settings that work perfect together, I droped the phone on concrete, cracked case.
Now my screen won't turn on on start up, will turn on ocasionaly when I press unlock, 1/2 way dim almost all the time, keyboard lights are gone, and TF3D is no more.
Luckily for me I have insurance and $50 later, replacement is on the way.

Now I did the search and I want to restore phone back to manufacture settings, and the only thing I found is this thread with lots of links:
http://forum.ppcgeeks.com/showthread.php?t=42741

Can anyone summurize for me and correct me if I got wriong link, I have sprint and need to restore brocked phone before I send it back not to void the warranty.

Thanks, guys, for help.
I'm a busy man, so any help is GREATLY appriciated.

This site ROCKS.