[tokuzumi]

The easiest thing to do is to put your contacts from your phone up to gmail. I created a secondary gmail account just for my phone contacts. Before I got my hero, I uploaded my WM contacts up to my gmail account, and haven't had to worry about transferring contacts ever since. Just sign in to the gmail account where you have your phone contacts, and you are done.

And yes, the method for rooting the evo will erase everything on your phone, so you would need to upload your contacts again. So, the easiest thing you can do is to get them up to your gmail account.