First off, what are the characteristics of your pc? CPU, motherboard make and model, RAM (quantity and speed), graphics card (onboard or separate, make and model). Please read our rules before making a new thread!
Did you REALLY have to post this TWICE???? See the answers here: http://www.msfn.org/board/Vista-vs-XP-t110...240#entry727240. Could a mod please remove this (useless) topic?
There are countless topics with exactly the same dilemma. Have you bothered to search the forums here? Ultimately, it's up to you what you need the pc for, wat are its specs and how much money burns your pocket... In future, please search before posting.
Hello and welcome to THE forum! First off you must take the ownership over those folders the set the appropriate permissions for your account in the folder properties.