Can I Install window Xp on an additonal hardrive?

Can I Install window Xp on an additonal hardrive?

You want to dual boot? yes you can do that, you must install the HDD and label sure it is recognized within BIOS, then reboot beside your XP CD contained by the CDROM Drive and run the installation, but specify your new drive when it asks.
yes.
Are you running Vista on your primary drive? Then yes, you can have two OS at equal time as long as they are on different drives or partitions.
If you miserable the same copy (license), you will not know how to activate it. If you mingy a second copy, yes.
yes you can also set it up as a dual boot machine ;)
IF YA HAVE THE DISC TO XP

SHUT DOWN AND RESTART THE MACHINE AND BOOT FROM compact disc