first you need to solve the USB issue, so your phone is recognized. There is " N O " other way to root your Prevail !!!! PERIOD !! Go on the comp to device manager, then on the menu "view/show hidden devices" and delete ( uninstall ) everything listed in the Universal Bus section. Disconnect any USB devices, like mouse, keyboard, etc,. Then reboot the computer and let Windows detect all usb ports new. Then install either the 32-bit OR 64-bit drivers, depending on your version of Windows ( right click My computer, Properties ) :
here are the drivers for Win 32-bit and Win 64-bit :
32-bit : http://db.tt/eGN4acLK
64-bit : http://db.tt/IlIkQ4BV
Then download :
FE16_ROOTED_CWM : http://db.tt/ORBp3o3J
and finally follow the guide : [GUIDE][CTmod] Rooting the Prevail for Dummies (written by a dummy)
If you have questions or need help, please post in the "All Things Root" section !