Welcome to the Z. Sounds like you've got a few things going on. First question is, when you had the alternator rebuilt, did that include replacing the voltage regulator which should be part of the alternator?
If you can keep it running long enough, take it to a local auto parts shop like Autozone and have them diagnose the charging system.
Once you get the charging system sorted out, get the A/C system diagnosed.
Do the major stuff first (charging) then move onto the minor stuff (A/C).
We have a lot of forums for all kinds of topics, so you shouldn't have any problems finding a place to post questions.
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