I remember that daunting feeling.. ahhh jazz.. :cool:
Well there's that www.chordfind.com site that I mentioned yesterday to start with.. that will help with a lot of them, with the added bonus of being able to find different fingerings for the same chord.
Also you will want to learn about "Chord Construction" to understand what it is you are playing when you play a f#m7(b5) for example. It's really quite straightforward once you understand how chords are constructed. You're usually just adding notes to the standard 1-3-5 chord, and in some cases you are replacing.. or both.
EDIT: I'm pretty sure the F#min7(b5) would be represented as 1-b3-b5-b7. 1 being the note F#, b3 being a minor 3rd interval from 1, and so on.. Normally you wouldn't touch the 1 and the 5.. but this is jazz afterall.. :)
Formula
1-b3-b5-b7
F# Chromatic Scale
1 - F#
b2 - G
2 - G#
b3 - A
3 - A#
4 - B
b5 - C
5 - C#
b6 - D
6 - D#
b7 - E
7 - F
F#m7(b5)
1 - F#
b3 - A
b5 - C
b7 - E
These are the notes that need to be played for the F#m7(b5), with the F# played first and also with the F# being the lowest/bass note.
I'm 99% sure anyway.. lol