Changine a hard drive and reusing a dell OS

[PyRo]

If I take out the hard drive that windows is on can I use the copy of XP on the dell CD or would I have to buy a new copy?
I want to slowly upgrade my computer and want to know just how far I can go before it won't take the dell OS anymore.
I want to do new hard drives fairly soon, new video card in the near future, then a board and processor probably in a year or so (need more than 1024MB but cannot afford to get the stuff I want right now).

[grw4w34]

if you can run 2 hardrives you wouldnt have to worry about it.

[wad04]

you can't really up grade in that order, usually dell mobos arn't very compatable with after market video cards. so i would get a new mobo and processor first.

[WickeDKlowN]

If it's one of those recovery discs, it usually looks at the mobo to see if you can use it. If not, I think it's up to 8 things you can change before you have to call M$.

[PyRo]

Yeah it's a recovery disk, so I guess that would require a new operating system.
Right now it has the cheapest GeForce4 you can buy in it but it is in an AGP slot. I still cannot just pop that out, put another in, install drivers and be on my way? It doesn't have onboard video and never did so I don't think their is any need to scew with jumpers, switchs, or any of that fun stuff.