New Droid 2 Global: Why can't I scroll to my apps? Only weather channel app works

I'm new to this. Perhaps this the forum I need to go instead of bothering people in the Droid 2 Global thread. Got my smart phone for Christmas. This is my first smart phone.

Today, I had to remove the battery and put back in after 20 seconds because the phone froze on the M logo. I did. But now I can't scroll to find my apps even after I hit the app button. The apps on top don't work except for the weather channel app. The menu button doesn't work either. I press it and nothing happens.

What am I doing wrong?

Also, how do I set a photo from my gallery to be my wallpaper? I tried to do it but all I got was a blowup of my half of someone's face. LOL