http://magicaljellybean.com/keyfinder/
Getting the key isn't the problem. If it's OEM XP, you can't reinstall with that key. Only retail keys can be reused, and it's fairly rare for a computer to have a retail copy of XP installed. You probably have an OEM key, unfortunately.
Personally, I don't like the idea of installing from the i386 directory already on your PC. I'm sure it's possible, but it's not the ideal way to reinstall Windows at all.
If you do have a retail key, and not an OEM one, I'd look for someone with an XP disc, or maybe try to download one (though I've never tried that). IMO, the best way to reinstall XP is to completely wipe your hard disk, then boot from an XP disc and partition/format from within the installer. There's nothing XP likes more than to think it's getting installed on a new PC.
And then there's the matter of completely wiping your hard disk... I've been using "parted magic" recently, this awesome little linux distribution... just put it on a USB key or a bootable CD, delete all the partitions using the GUI, then execute:
Code:
dd if=/dev/zero of=/dev/??? bs=512 count=1
Replacing ??? with the device ID of your hard drive, usually hda or sda. This zeros out the partition table, and your hard drive looks like it came right from the factory, at least to any operating system you install.
Oh, and the thing with the Win98 CD is due to the antiquated nature of Win98--it installs from DOS, then expects certain files to be edited to point to a DOS driver for your DVD drive. Usually, this would be stored on a corresponding floppy disc, which is one of the many reasons why it's sending you to A:. In contrast, WinXP installs from a simplified version of XP, which tries to load drivers to match your system.
If all else fails, the educational price for XP Professional is 80 bucks (often cheaper at certain colleges). You could always seduce a hot young college student then get her to buy it for you.
