Root Root problems

Hi i recently got a milestone 2 from amazon. I ordered a milestone 1, but they gave me a milestone 2 no complaints her though lol. Anyway i want to root the phone and I tried universal Androot and i get this error every time "Failed! No~~~Fu goo ~~~" I also tried z4root and it seems to loop forever i left it for over an hour maybe an hour and a half nothing. So I want a root process that can be unrooted if necessary. Thanks in advance