[Wine] Mac Wine help for a complete noob?

[Bundesdrucker]

FIRST OF: I have absolutley no idea when it comes to terminology or working with Wine in general, you guys just seem to be my only hope.
So heres my problem: I recently purchased the classic Grand Theft Auto Games (GTA 3 to San Andreas) at GamesTreeMac for my Macbook. Of course Rockstar didnt go through the hustle of rewriting their code, so GamesTree just ported it. Problem is: Since I run a German system, certain content (like rampages, blood, money for killing people) is locked from the game. But especially the rampages are important for 100% completion. So I remembered the old windows trick: Switch your system language to english. Worked like a charm!
But since I am a lazy bum and dont want to switch around everytime I wanna play some GTA I googled for ways of switching the language for certain apps. I found one and it involves going to ˜/Library/Preferences and looking for the .plist file for your app. So far so good but heres the catch: The GTA games don't have .plist files. Only folders containing several files, including a file called "config" which looks like this:

Code:
WINE REGISTRY Version 2
;; All keys relative to \\Machine\\Software\\Wine\\Wine\\Config
;;
;; MS-DOS drives configuration
;;
;; Each section has the following format:
;; [Drive X]
;; "Path"="xxx"       (Unix path for drive root)
;; "Type"="xxx"       (supported types are 'floppy', 'hd', 'cdrom' and 'network')
;; "Label"="xxx"      (drive label, at most 11 characters)
;; "Serial"="xxx"     (serial number, 8 characters hexadecimal number)
;; "Filesystem"="xxx" (supported types are 'msdos'/'dos'/'fat', 'win95'/'vfat', 'unix')
;;   This is the FS Wine is supposed to emulate on a certain
;;   directory structure.
;;   Recommended:
;;   - "win95" for ext2fs, VFAT and FAT32
;;   - "msdos" for FAT16 (ugly, upgrading to VFAT driver strongly recommended)
;;   DON'T use "unix" unless you intend to port programs using Winelib !
;; "Device"="/dev/xx" (only if you want to allow raw device access)
;;
...



And so on. As I said earlier, I have no idea what this controls and what not but from my basic knowledge I see that it gives certain system specs and seems to mount the drives.
So my question now is: Is there a way to switch the language the Wine system emulates the game in, to force it into a different one then the current main OS'? Can I add a line in the config for that, if so where should I do that? If you need it I could also provide the whole config or a listed folder structure. I hope you can help me :)