Alright everyone, I've tried everything. Trying to post links to the aim: protocol in MySpace is impossible. So I thought about it for a moment. Why do we really have to link directly to the aim: protocol? Couldn't you just send the request through an intermediary page? The answer: yes. Armed with this knowledge, I wrote up a little script that did just that, except when I looked at it, users probably wouldn't want to manually write the extra links out. I needed a generator.
Here it is, the AIM Remote Generator that works for MySpace:
http://podcast.openfirst.org/xim-gen.php
Enjoy everyone!