we have 2 desk tops and 2 new laptops , the desktop in my downstairs cave is a 04 Dell with only 512 ram/memory . i was gonna but a new tower but wife said no no lol . so can someone who knows very little install it ?? i want to keep xp as some programs and stuff i use you cant use windows 7 etc etc or is it cheap enough to let a tech install it ?? any easy guides or how to ?