What would be the point? I mean...in your opinion, what will you gain by pursuing either course of action OR a different course of action?
If your system currently satisfies, why change?
If it doesn't satisfy...the changes you outlined don't seem significant enough to warrant the effort.
Going from AGP 4x to AGP 8x isn't even going to be a noticeable difference, IMO. If I wanted to "upgrade" my video, I would just either buy a newer motherboard with better graphics (tons of them out there) or go the new motherboard with PCI-e graphics capability. If you don't game...I'm not sure you can tell any of the differences.
If you need a DVD burner...as opposed to whatever you have now...then getting one makes sense. If you don't have one and you have no real need for one...why the hots for it now? It's inexpensive...but it can wait if it has to.
Example: I have two DVD-burners, but I hardly ever burn DVDs...I burn CDs and use hard drives as my primary storage devices (not DVDs). I bought mine because it cost just as much for a DVD-burner as it does for a CD-burner and I have more options, even if I don't use them
<<Plus how hard would it be to put in a hard drive with everything on it and expect it to work without having to call microsoft up for a new code (cant do it because I lost my cd key a couple of years ago)>>
Replacing a hard drive in a Dell...I have no knowledge there. Replacing a hard drive in a system built by myself...is pretty easy and yes, it will work (for me).
As for your key...you can use this tool, SIW Download - http://www.gtopala.com/siw-download.html
to find and write down your current license key. It will be listed under Software/Licenses
I get those ads from 3B.net also. I've never found anything offered by them that I could not find cheaper and maybe more recent...somewhere else.
You cannot take a hard drive from one system...and place it in another system...and expect it to work properly. It can happen, under the right circumstances...but it's probably more work than you would be interested in going through.http://www.michaelstevenstech.com/moving_xp.html
If I were prepared to spend $120-150 on upgrading my system...I would buy a inexpensive, decent (ECS, PC Chips) motherboard that has good onboard video and sound (they all do now)...takes DDR2 (cheaper than DDR) and that takes a CPU which is now inexpensive but has more horsepower than the one I currently have. I think that can be had with $150 or so...and it would be far better than the alternatives you seem to think are your current ones.http://www.newegg.com/Product/Product.aspx...N82E16813135096http://www.newegg.com/Product/Product.aspx...N82E16820134117
Installing a motherboard takes no great gift, even I can do it