Stardock has released a new freeware program called Theme Manager 2004. It is the successor to WinStyles in that it enables users to manage all their skins, themes, wallpapers, and icons all from a single user interface. 

From Theme Manager, users can change their visual styles, wallpapers, or apply entire suites at once.  Users can also take a snapshot of their desktop and save it as a .suite file. 

WinCustomize.com includes a .suite section (make sure if you upload a suite that you use the LINKING feature to link to skins and themes that aren't yours rather than including them directly).

Theme Manager is part of Stardock's Object Desktop.