This site is really good, i scored it yesterday from an email from a seller on ebay who I regulary buy games from, for my fiance.......and sometimes myself.
http://www.systemrequirementslab.com/referrer/srtest
that is the link. It tells you everything you need to know about your pc, and if your not up to date, it gives you a button to click on so you can see what you should be upgrading to.
I hope this link is usefull to everyone........it certainly was for me!!