I used OneClickRoot as well, and I have never rooted a phone before and did not know what it was until I got the Prevail like a month and a half ago.
Even failing several times with OneClickRoot before it went through, which was frustrating but did not damage my phone at all, I still managed to get it done in the end. I am thinking the problem that I was having was that my girlfriend's laptop was what I had access to at the time, and it is REALLY BAD to the point where I think the USB ports were lagging.
At any rate, whatever you decide, good luck and enjoy your root experience! I know I have
