This is easy!
Simply do a google search for this exact thing: "Rooting the Prevail for Dummies!"
It should be the first link on your search.
Some of the links in the post may not work but most will, for the ones that don't simply do a separate google search for the specified piece of software you may need and you will find the right links. Trust me I just rooted mine today, it's really easy, faster with a better internet connection, i'm writing this with the prevail's wireless tether app I just installed.
Hope this helped.
PS: I tried to put some links but since this is my first post in this forum I can't put links on my posts until i've written at least 10.