So you got BusyBox installed. What happened? In the other thread it seemed you still had problems.

Checked out OMJ's guide in this thread for custom firmware -- http://androidforums.com/all-things-root-droid/136508-guide-all-things-root-related.html

 

Were can i get busy box an what is busy box for lol sounds nice

 

Download titanium backup from the market. The menu settings in that app allows you to update to the latest busybox.

 

By "Tom manager" I assume you mean rom manager. In rom manager you can flash the latest of clockwork recovery and make a backup from there. You can either do it from within the app by going to "backup existing rom" or you can do it manually by powering off the phone, then hold the power button and X at the same time to get to the recovery menu. Then go to nandroid and then backup and it will backup your phone. From there download any rom you'd like and flash it. Just make sure to wipe data and cache before you flash any rom. If you have any more questions about that stuff let me know.