Seriously, I ned help here!
I've made a few other posts about parts of this problem, but none have been answered. I really need some advice, since the situation I am now in is that it takes nearly five minutes to start Portable Thunderbird. I need a portable mail client with GnuPG that I can use to *quickly* plug in to a guest PC and get my mail. I need the ability to sign my messages so the recipient can verify that it really *is* from me, even when I am away from my "home" PC.
I downloaded version 1.5.0.2 with Enigmail+GPG after several unsuccessful attempts to install Enigmail in the "Vanilla" version. After a lot of experimenting I found where the Profiles were stored and got my address book and saved mail working. The GnuPG stuff works fine from my "home" PC, but when I connect using a guest PC, it does not sign my messages. That is the object of the whole thing - to be able to send a message from anywhere, and have the recipient able to verify through the GPG signature that it came from me.