I have had a HTC wing for about a year. I was considering a BB when I was first shopping for a smart phone and got interested in the whole windows mobile thing.
Well one night I dropped it and that was it for the screen.
So I decided to go ahead and get that BB. I got a Storm.
I love it.
Blows the iphone away.
IMHO
I found this site last night and immediatly signed up.
Read the OS stickies to figure stuff out. Crackberry says I'm a noob because I read the stuff and figure it out on my own. If you ignore the "plz help" and flame threads you'll find what you need in your searches much faster.
Scroll to the top of your screen and select the themes tab.
You can also install the crackberry launcher on your storm. There is a link there for free ota apps and themes there too.