Any mods I've ever done include removing the rest of the paint from my car because the PAINT looked like scratch marks.
I know I sat two computers at my desk side by side, one win7, the other winxp, because I couldn't get AgeofEmpires to display correctly on WIN7. Deleted everything off the xp computer except for the ability to play the game. It used to take 20 minutes to boot. it now takes 40 seconds. My main computer boots less than that
I've added some stickers to it that came with some of its parts: SpeedDemon for the intell SSD, Republic of Gamers, etc.