You need to read the "unbrick your droidx" thread. I am not aware of another walkthrough but that one is pretty easy. I also recommend not messing with things until you have learned more about them.
Sent from my DROIDX using Tapatalk
i must agree. flashing an SBF file is the easiest way to get back. probably should get to understand what youre doing before taking the jump. makes it a lot easier when something goes wrong