just had a hand on a tmobile comet aka Hauwei U8150 and today im doing a tutorial on how to root it. Do at your Own Risk
its easy and simple so shouldnt have any problem after/ meanwhile your watching my video.
z4root can b found on google search and if you needed the file i have added one below:

forum.xda-developers.com/attachment.php?attachmentid=446145&d=1290341328

any comment or concern please do below