Well, I found the files on my own. In case someone else runs into a similar problem, I'll give the specifics. In essense, there's an entry in my personal "Users" directory named "PlayOnMac's virtual drivves". In there was my "Metatrader4" directory. Then there is a "drive_c" directory, then the "Program Files" directory. And then a directory for the brokerage I use. The files are under there based on the standard directory structure that Metatrader 4 employs. In particular, an "MQL4" directory with the various indicators, experts, etc. directories.