mailing list mgmt

Hello,
I am a touring musician with some advanced design
and coding skills but I have a question that has
surpassed my knowledge. Here goes.
I have a 600+ member mailing list of addresses onlyuu
stored at groups.yahoo.com of people from Boston -
California who like my music. I want to give them the
option of getting mail about shows close to them, shows
everywhere, only general announcements (CD
releases etc), or all of the above. I would like to
interface this with Filemaker.
What do I do?
I have thought about doing a poll and manually
entering all their info...I have some other ideas. I
thought I'd ask the geeks in charge though.
thanks!
Syd
sydband.com