Where's my mouse pointer?

I just got my Mac hooked up and I dont have a mouse pointer. I cant tell where the mouse is! Any ideas? Also the icons are off the screen. This is my first Mac and I dont know where to go to fix any of these problems.

OK, I rebooted and now have a pointer but the screen size is really messed up. Its like Im only seeing the middle of the desktop. Imagine taking a post it and putting it in the middle of your screen and thats the only part you can see out of. Is it because its connected to my tv and not a computer monitor?