Thanks you guys!!
I haven't messed with it yet... I'm pretty clueless when it comes to stuff like this (obvious, no?)
So - if I used DBAN, the computer will need to have Windows7 reinstalled? I'm not worried about having to do that - I'll let the buyer deal with it!
My last HP crashed (a LOT) and I did the "F11" thing a few times. Pretty much just a recovery with no backup disks (bad me, bad!).... do ya think that would work to get it back to factory-ish-ness?
I just don't my info or any 'footprints' left on the computer... geez sorry if I'm making this more complicated than it should be lol
I'll start with the control panel thing and go from there for now