i didnt get the cd yet but i was playing with xda tools. i managed to dump the rom image from my 4100 its in format nb1 i dont know how to edit the file if its possible. do u know anything about that?

its a little tricky to do
run the xda tools for source sellect current rom) for destination browse to your computer somewhere make sure u save it as an nb1 and make sure u add the extenton otherwise it wont work.

let me know how things go i will be looking for programs to edit the file when i do have time..

cheers.