CowboyFromHull

My Acer Aspire-T671 now has a lot of junk, some programs aren't working properly, the usual stuff after a while so I want to do a system restore to how it was when I recieved it from the shop. However I was not given a vista OS disk from acer. At the moment the disks I found were two acer blank recovery DVD's. I have put my data on my external hard drive. What is the best way to restore it to how it was when I recieved it? Thanks, Mike.