This question already has an answer here:
I am very new to ubuntu/linux. I have recently switched my laptop to Ubuntu 13.04 after I had an issue with Vista.
I have downloaded one of my favorite old games, Panzer General. I downloaded the zip file extracted it gotten the .exe file and am able to get it to run by right-clicking and using Open With...WINE windows program loader. However, if I go into properties(to make it the default), WINE does not appear in the list of applications to 'Open With' and the add button is un-clickable.
Any help would be great, thanks!