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[sCHween]

Vielleicht kennt einer das Problem - Pfadvariablen setzen im Mac ist nicht so einfach oder ich bin wohl einfach zu dumm

Jetzt habe ich etwas ganz nettes gefunden:
Rubicode - RCEnvironment

RCEnvironment is a Mac OS X 10.1 or higher preference pane that allows a user to edit their ~/.MacOSX/environment.plist file. This file is simply a property list of keys and values that the login system will read and load into the process environment of all applications that are launched when the user logs in. These variables are the same as environment variables that can be created in a command line shell (eg: sh or csh), but they also can be seen by GUI applications. In this, these environment variables are somewhat similar to Windows' Environment User Variables.
While the PropertyListEditor that Apple provides with the developer tools can be used to edit this file, that tool allows more flexibility than should be specified in the environment file, plus you have to install the developer tools to get that tool, while this is a simple editor that ensures the file is setup correctly and does not require the developer tools.
RCEnvironment is for use with MacOS X 10.1 or higher. It comes with source code if you want to see how it works.