The only real way to watch the NBA 20 years back mate was to get someone to mail it to you from the states. I am 39 now, but I've followed the NBA since I was a kid. There was the odd game on tv, but nothing much.
Nowadays it's a hell of a lot easier :)
I am looking at Foxtel's site now. 
ESPN and ESPN HD show the exact same shows, is that right? So, I don't need the sport package for $16, just the ESPN HD channel for $10?
The basic package for $40 a month is a bit annoying as I don't think there's a single thing on there that I will watch. I guess you need it though as you can't get the add on channels without it. 
Looking at ESPN International, they only have scheduling up until the end of October but they do have the Celtics v Bulls season opener scheduled for Oct 31, so I guess that confirms they'll be showing the NBA 2009/2010 season :)
ESPN Australia-NBA-All							
	Date		Start Time		End Time		Description
	10-31-2009		10:30 AM		11:00 AM		NBA Pre-Game
							Description : NBA Pre-Game
	10-31-2009		11:00 AM		1:30 PM		NBA Friday
							Chicago Bulls vs. Boston Celtics at TD Banknorth Garden Boston, MA USA
							Description : NBA Friday