weekend...help!!!/Update

[Mike <mac50@columbia.edu>]

Hi again all.  Bad thing happened today.
 
Was driving from Saratoga (NY) to NYC and about halfway back I saw a
warning symbol come on.  Having just bought the car used without the
manual, I didn't know what it meanbt, but all the gauges looked fine.  It
looked like this:
[deleted wiper fluid refill symbol--thanks]
			
Anyway, this was on and I stopped at the nearest garage (I was in the
middle of nowhere) and had the mechanic check it out.  He wasn't familiar
with Audis but thought it might be an oil or radiator warning.  He checked
and everything looked ok.  I drove the rest of the way watching the gauges
carefully.  Just as I was pulling up to park, The warning stasrted
alternating with a battery symbol, and the voltmeter dropped to about 3 or
4.  

UPDATE:  This morning, started the car--battery, ABS, brake warning lights
all on.  Voltmeter about 10-12.  No increase in voltage with revving. 
Turned car off, checked under the hood and a belt was missing.  I don't
know what belt this is.  Being new to the Audi, I'm sure someone can help.
This was the belt from the engine toward a component on the right (as you
face the windshield)--looked to me like the alternator.  (Is that where
its located on an 89 100??)  No garages open on Sunday, so I plan on
taking it to the dealer tomorrow.  Is it safe to drive the car 1-2 miles? 

Thanks for all your replies!

Mike