Ah, Windows styles. Other than changing XP from it’s standard “Fisher Price” blue look to the more sleeker silver variation, I don’t tend to mess with styles.
Until I read an excellent article at istartedsomething.com
There is a kind-of official Microsoft style named Royale, which is a flashier version of the standard blue. There’s also Royale Noir, which is black Vista-styley version of it. And it’s Royale Noir that I now have installed on my PC’s at home and at work.
The article above has the download and also details of where to stick it. If your PC can’t read .RAR files, then I’d recommend either installing Filzip (it’s free) or use an online service to convert the file from .RAR to, say, .ZIP