I would do that, but if I already have a good PSU, Graphics Card, and case, what would be the point in a new system? Sorry if this seems dumb as I'm kinda new to this, but if I replace the motherboard and CPU isn't that basically a new system, or would I have to replace the hard drive too? I wouldn't mind getting a SSD but I don't want to lose all my programs and stuff as the computer came with some drafting software on it and losing that isn't an option. I do have the money to get a brand new computer but I would prefer to use as many parts from this one as possible to save cost. Also, I would like to upgrade to Windows 7 if you know of a way to this as well.