@SkyFuser: Sorry, I probably did not explain it that well. I have my laptop, and then hooked in like normal is a monitor. So I have my laptop that is open with screen #1 being the one built in to the laptop, and then I have the monitor sitting to the right with that being screen #2. Initially they show the same image, but you can use the monitor as a second screen, by extending your desktop onto that monitor.
Windows XP: Right click on desktop—> Properties
Click on the Settings tab I believe (going off memory)
Windows Vista: Right click on desktop—> Personalize
Click on Display Settings
Then, for both OSes, you will see your monitor that is hooked up and should have the number “2” on it. Click on that image and click “Extend the desktop onto this monitor” and resize the resolution and click OK. After this is done, you should be able to move your curser to the right of screen #1 and it will appear on monitor #2 coming from the left. A very cool trick!