I've had a k7s5a (ver. 1) based machine for the last 6 years. Its served me well but its beginning to struggle both in terms of cpu and memory resources. I upgraded once during that time - Has an AMD athlon 1.1(?) thoroughbred cpu and 750MB memory. Have I reached the end of the line in terms of being able to upgrade? If not, whats the highest I could go in terms of cpu/memory spec?