I have read some papers on micro java. I am mainly interested in
asking this because I have been focused on Ruby on Rails, but might
consider Java if I could find an interesting project to work on. I have
done some Java and alot of C++, but not much J2EE, micro java etc.

The real goal here is to get more job skills for my resume. The problem
might be, maybe a programmable cell phone might cost more for the phone
and or service, not sure, but could you open socket connection to your
PC from a cell phone in micro java ? maybe on the PC you'd have a
program that checks your email and sends the email or does a pattern
search of the email and sends info back through the socket. I'm sure
there might be other ideas as well for what you could do if it was
possible or very easy as the PC could act as a sort of server.