|Virtually any ATAPI/IDE drive should work for the unit, though I've found a few that were "too long" (didn't fit flush with the front-case cover) on some older Dells. If memory serves, you'll need the special drive-rails for most Dell machines. If that's the case, make sure you have them or can locate a pair. Also make sure you set the jumpers (master/slave/cable-select) correctly when installing into the machine. Finally, while you can burn CD's with XP natively, it doesn't do DVD's; so you'll need software for DVD-creation. See the links below for some freebies---should the drive not come with burning software:|
You also may need software for some video formats that Windows Media Player doesn't handle too well:
And FWIW, if your machine truly has only 512MB of RAM, I'd probably go with KMPlayer, since it seems a little lighter on system resources than VLC Player.
"Channeling the spirit of jboy..."