Help with Grand Theft Auto, Liberty City Stories

Okay, so I downloaded a .cso of GTA:LBS. I was running 5.50 GEN-A, and it didn't show up, so I tried going to GEN-B and it still won't work. Anyone have any ideas?

is it in the ISO folder at the root of your memory stick?

if so is it an .iso file or a .rar file?

if .iso make sure its name is short and to the point like.... mgspop which could be metal gear solid portable ops.

if .rar you need to have winrar installed on your comp and then you need to extract the .iso from it.

these answers should make it play.