Have just downloaded Unsanity.com's Shapeshifter. It's an application used to easily and safely change the overall appereance of the MacOS X GUI by using themes. The themes can be downloaded for free from various sites, and there's actually some pretty cool ones out there. Using the app. is as easy as it gets, and so I far I haven't experienced any problems with my system,- it's just as stable and fast. I've tried the iStyle-, AquaPro- and GUiPod-themes, and they all work fine with Mac OS 10.3.3....I think I like iStyle the most. MacThemes.com is a depository for themes to the OS X with some good review-articles and great screenshots of every theme... Screenshot of iStyle-theme