U have to be clear about what u have done... Cwm is not stock .... Its a recovery partition flash that certainly isn't stock recovery... U still have to flash a rom.... If u have a custom recovery installed your best bet to slowly ease into it and to next flash a rooted stock ROM... Samsung is a bit easier to root then HTC.. If you have gotten a custom recovery you have basically done all the hard work already... There aren't many custom ROM options for virgin yet... There are ways to get the good stuff up and running but u might have to sacrifice lte or MMS and do a bit of tweaking to get SMS and 3g. As I said... I suggest you flash a rooted stock ROM. That's all root is, a rom with superuser privileges... To flash aokp, cm, PA, PACman, etc will require some steps u aren't ready for...