Start Folder?

not right now there isn't. What you could do though, is make a batch script (.bat file) which says:

@echo off
< path to the PAM >
< Path to Thunderbird >


Then change the line in your autorun.inf which tells it where the PAM is so that it says where the batch script is. You should also be able to change the icon in there so it doesn't come up as the little ugly command box icon.
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chris

It is not your audience's responsibility to puzzle out what you intended to say; it is your responsibility to express yourself so clearly that no one with a modicum of intelligence and good will could possibly mistake your meaning.