Sorry I can't help you with windows, but this ad was in the for sale section a few weeks ago, but may or may not be for your model. The seller has not re-posted, so who knows if they are still available?
http://www.ausjeepoffroad.com/forum/...d.php?t=111344
Chances are you may be missing other bits as well.
Front window frames and the 4 dedicated bolts which secure them to the rollbar (2 bolts on each side)
Rear tailgate bar which attaches to the rear window and the 2 brackets for it (the tailgate bar) which attach to the tub. - The size of this bar and brackets changed at some point - sorry, don't which year.
The soft-top frame needs a bolt at each of the 4 ends which attach to the rollbar behind the front seats. These are specific bolts - you wont find them at Bunnings.
The 3 rear windows are usually sold together and the 2 front ones sold as a pair.
Also the zip on the rear passenger side rear window changed at some point. (I'm guessing '02 but could be wrong).
So a rear passenger side window from, say, a '99 model cant be used on yours unless the zip is replaced - which is easily done by an upholsterer - but just something else to consider when purchasing.
Try posting your request in the wanted section, oh, and welcome aboard
Edit: Sorry for the information overload.
If you can't find the wanted section, see the marroon strip above with options - Portal FAQ Chat etc.. Click on Trading. A drop down menu appears, then select 'wanted'.