Did you resize the screen?
Right click on desktop
Change Display Settings
Change it to 800x600 and see what that does for you.
If that creates a small window then you need to go into the BIOS - some laptops have a feature called Graphics scalling - make sure that is on.
You can also go into CCC - the ATI control panel and turn on Enable GPU Scaling...
Those will stretch your smaller screen back to full size...
I have never played those games so I cannot tell you for sure.