will i lose root if.....

[plugsmustard]

Ok after a bunch of crap I have a htc dream from rogers that's thinks its a tmobile g1. So if I use the updates from the htc webiste and convert it all back to make it a rogers phone again. Will I lose my root access?

Out of 75 people not ones knows the answer to this question? I guess I am going to have to do it and find out for myself

thanks anyway