The new Desktop Windows Manager in Windows Vista only allows Patch system visual styles created by Microsoft. Creative minds on sites like DeviantArt create cursors, icons, wallpapers and themes. After using VistaGlazz you can now use custom styles as well. Use “VistaGlazz” to patch system files and then everyone can use all custom themes without any problem.
http://www.codegazer.com/vistaglazz/