So you are all Laptop users?
Please tell me the Manufacturer and exact Model.
Further please give us some more information:
Windows XP: Go to your start menu and click on run. Type in "dxdiag" and hit enter
Windows Vista / 7: Press the windows key on your keyboard or
click on the start menu. Type in "dxdiag" and hit enter.
Now click on the button that says "save all information".
It will prompt you to save a file. Save it where you can find it.
Then e.g. zip the file
and attach it to a message.