ok. I get the Commodore 64 emulator from the software center - C64 shows up on my dash to the left.
I download and unpack the .zip file for the "4th & inches" rom; however, double clicking the file "4th.inches.d64" doesn't start the game. Neither can I click on the c64 on the dash to get it started.
I then download "hardball" rom and have the same problem.