I thought you meant the actual hardware and case from the title
I don't mod anything to do with the hardware and external looks of the computer, not into that at all.
I hide my computer under a desk and have a flat screen above the desk, so it doesn't make a difference to me.
I have changed the desktop background, I would like to do something like Freckled has on her desktop, its a great idea.
She might be able to post a screenshot of it again, not sure where the other thread is.
I have changed the xp skin before and liked it, although sometimes it didn't load on startup and my skin looked like something from 95 or 98, which I didn't like.
I'm back on a skin now which is just a normal one available in windows, silver.
Its very plain but quicker to load than some of the other skins I tried and don't have any problems with it