Hi,
Right Click Desktop - Graphics Properties
Right Click Desktop - Graphics Options
Right Click Desktop - Personalize - Display Settings
These should help you set them up.
How to Setup Dual Monitors in Windows 7
http://www.online-tech-tips.com/windows-7/how-to-setup-dual-monitors-in-windows-7/
Two monitors are better than one
http://www.microsoft.com/athome/organization/twomonitors.aspx
Work and play better with multiple monitors
http://windows.microsoft.com/en-us/windows7/work-and-play-better-with-multiple-monitors
Move windows between multiple monitors
http://windows.microsoft.com/en-US/windows7/Move-windows-between-multiple-monitors
Multiple monitors : frequently asked questions.
http://windows.microsoft.com/en-AU/windows-vista/Multiple-monitors-frequently-asked-questions
Hope this helps.
Rob Brown - Microsoft MVP - Windows Desktop Experience : Bicycle - Mark Twain said it right.