What is happening when you try to install? Is it giving you errors? We need more information.
That laptop can run Vista, so it should be able to run Windows 7. I checked on the ASUS website and all they allow you download driver-wise is for Vista, but you can use Vista drivers with Windows 7.
Definitely need more information on exactly what is happening when you try to install. What version of Windows 7 are you trying to install (Home, Proffessional, 32-bit, 64-bit)?