Hi All, This is my first thread so please be patient with me ! ! ! I have a 4 year old computer which fully satisfies my requirements except it is slow by present standards. I have increased memory to 512megs and frequently carry out all necessary housekeeping although I am sure there is a load of rubbish on the HD which has gathered over the years (but that is another question). The system has an AMD Athlon XP 1500+ processor (1.33ghtz) which sits on a Gigabyte 7VTX 1.x motherboard. Before I start looking at changing the motherboard (which I don't really want to do) my question is what is the fastest AMD processor I can fit to my present board to give me a decent increase in speed and are there any complications I may come up against. I know my choice will be limited but I don't want to get into changing a large number of components or trying to talk Microsoft into letting me re-register Windows XP amongst other things. Any advice will be gratefully appreciated.