Eucharistadorer :
Can't I just leave the 250 as is, with Windows on it and everything, and then just reinstall XP and games onto the Raptor? And then once the 250 is connected, uninstall the games? Can that work?
One more thing, I was reading reviews that the Raptor runs really hot, should I get an HDD fan so it or the inside of my case doesn't overheat? Or is that just people being idiots?
No sir, when you install a game in Windows it copies files to the windows system folders and makes registry entries related to the game settings. If you create a new windows installation on another drive, the new windows has no idea the game even exists and will not uninstall it as you say.
Once your new windows is installed you can NOT go back and boot into it to uninstall since your boot sector has been reset to the new OS location.
As one gentleman mentioned your "only" viable option that will keep ALL your settings not force you to uninstall anything and allow you to run everyhing "EXACTLY" as you already have it on your new Raptor is to:
1: ghost your existing 250GB HD to an external drive. This copies the entire HD as an image to the external.
2: install the raptor leaving the 250GB alone.
3: ghost the image from the external back to your new raptor
4: reboot your computer and make sure your raptor is the first HD in your boot order, you may even unplug your 250GB just to make sure your raptor is in fact booting as main drive and has all your existing data.
5: once you have booted into your old intact windows but on the raptor, you can shut down and reconnect your old 250
6: now you can reformat your old 250 since all your files are safely and intact on your new faster drive.
7 you also have a nice backup of your data in case anything bad happens in the future.
You are done. Windows will not bother you with any registration as it does not know what has happened and everything installed will still be there. You can now uninstall your games or whatever and reinstall them to your other drive if you like.