alternator rebuild/repair/other?

["Rob Winchell" <rbw@avs.com>]

Q -

>From the looks/sounds of it, my alternator is headed south.
Symptoms:
1) Start car, voltage gauge says @12 at idle (OK)
2) battery and brake lights faintly illuminated (not OK)
3) Rev car past 2k RPM, voltage goes up to normal (@14) (OK)
4) Start hearing a pretty substantial "bad bearings" noise (for lack of a
better term), but only at idle (not OK)

So, assuming it the alternator, what is the conventional wisdom - rebuild?
What are the options as far as replacing with a new one? Is this a Bosch
part or something else?

Sorry for all the questions, thanks for all the answers.

Rob Winchell
91 200Q