Easy way to go to Appearance Tab of your Display properties in Vista
just by creating shortcut on your desktop.
1st) Right click your desktop then scroll to New > Shortcut
A window will appear; just type in the location bar;
then click next and then type a shortcut name in it;
you can type any name you want; or just name it Appearance..
Thats it you can click the shortcut you’ve created and it opens the appearance tab,
and choose the theme u installed..
You can also use this in the location bar;
Desktop Icon Settings = control desk.cpl,,0
Screensaver Settings Tab = control desk.cpl,,1
Hope it will help you. Thanks!