Only a comment regarding your second point. The virtual machine provides virtual hardware. And that virtual hardware doesn't include the video card your game need. So it won't work.
If it doesn't work natively (in Windows 7) either, you'll need another machine to play it.
1.My Asus netbook is running windows 7, I have installed Virtual box 4.2.6 and have installed Windows Xp SP3 in Virtual Box, The Issue is I can't play games on Full Screen , the Virtual box goes to full screen but game is running in small window box i have installed guest addition and expansion/extension pack.
2.There is another error in Virtual Box, When i Install Fifa 08 or Fifa 06 while running it shows the game requires Graphics Media Accelerator.
Please Guide me Through the Following errors.