Don't know if anyone has mentioned this before.
This is a very nice, free, desktop organizer.
I was having trouble with my icons going all over the place on my laptop, this fixed the problem.
I've been playing with it for about an hour now and I'm really starting to like it.
If you have problems with your icons getting all messed up at times, give this a try
http://www.stardock.com/products/fences/