Should I do this? (experts)?

Question

Right now I have a micron, with a socket a motherboard...this is what it is now.

nFORCE MICRO-STAR MS-6373 motherboard
AMD Athlon 2000+
512MB ram
Nvidia GeForce 4 MX420 (64mb)
120 GB HD

I am wanting to upgrade to:
AMD Sempron 3300+ socket a
1.5 gb of ram
nvidia 8000 series pci video card

then take the mobo and parts out of the micron beige box and put it in this http://www.directron.com/htpc280ba.html ... for my home theatre setup then liquid cool it and overclock it... should I go through with that and spend the 650 dollars or just save up for a new computer? the reason im doing this is because ive bought 3 games that i can't even play now because of my video card

Answer 1

I'd just upgrade the video card for now, and save up for a new computer for later...