Here's how I got it working....
Extract the drivers from the .exe using winrar, place them in a handy folder.
Right click on the generic driver and select "update driver software"
Click "browse my computer..."
Click "let me pick from a list of device drivers..."
Highlight the current driver
Click "Have disk"
Navigate to the folder you put the extracted files in.
Ta dah, done.
I've noted your suggestion for future usage though. Many thanks.