z4 root should work for you. Do you have it on your SD?
Here's the apk(http://www.megaupload.com/?d=EW90WUQN) for you. Just put it on the root of SD card and use Astro or any file manager app to load onto droid and one click should root ya...Mighthave totry a couple times as its common that it does not fully go thru all the time the 1st time..
Definitely was a hell of a lot easier than when I did it on the original (this one was a replacement) which too about 2 hours since I did to do everything manually.