Can you please help me determine if the laptop I am about to buy is a good deal or no? I am not too technical but I want a decent machine that is fast but reasonable in price. Compaq Presario R3000Z Notebook Computer Package with AMD® Athlon™ XP-M Processor 2800+ • 256MB DDR memory • 40GB hard drive What does this processor speed equal to in Pentium? If i upgrade to 512 MB would that be better? What is the next higher level processor after the 2800+? and how many GHz its equavilant to?