I have an old Dell running a celeron 400 as my back up computer. Now I have these parts. Duron 1000 Soyo kt266A MB GeFroce 2 pro video card. Now my question is can I drop that soyo mb into the old dell case. Will the dell power supply work on my spare parts. I know this will be an upgrade for free for my back up computer. I really do not want to get a new case and power supply for it if i don't have to.