I don't know the guts of the HP laptops, but you should be able to simply pop off a panel (or unscrew, whatever) and pull the old drive out.. it may be in a tray of some kind.. stick the new drive into the laptop, and format/reinstall the OS.. it's not too difficult, if you can handle doing empeg upgrades.. :)

12gig red mk2 -- 080000125
_________________________
80gig red mk2 -- 080000125
(No, I don't actually hate Alan Cox)