guys....need help. been trying to root my phone since morning but failed to do so.

i failed at the first hurdle. my KIES could not run properly on my win xp machine.

error --- Kies.Common.DeviceServiceLib.FileService.CoreWrapper.DevFileServiceWrapper threw an exception.

anyone experienced this before?

also, a friend of mine keep asking me not to root saying S2 is already very good on its own. :T should i? should i not?