If you like the look and feel of Vista but don’t want to deal with the headache of swapping Operating Systems, Vista Inspirat from the folks at Crystal XP might be worth considering.  Unlike an application such as Window Blinds … Vista Inspirat is completely free (although they do encourage donations).  With this program you aren’t going to have the Areo Glass effects, but it still is pretty neat. 

The start menu …

Also included is a Rocket Dock which emulates OS X.

A view of the Desktop Icons

With this package there are two themes.  Vista and Vista Inspirat 2 of which I prefer the later.

A view of the Vista like folders.

I just installed this application 30 minutes ago and have yet to tap into all the tweaks available.  Also, the pack includes a bunch of new sounds for XP.

Another cool thing is that un-installing and returning to your previous desktop is a snap (requires reboot).