The -200 is the only freighter based in Oz and I think they tend to come up to HKG and then do a few sectors from HKG like Chennai/Mumbai and sometimes as far as Dubai then back down with the occasional tech stop in Darwin on the way. There are more asian destinations but I am not sure exactly which ones the -200 does.
There are not generally a lot of positions on the Oz freighters but they do come up (they are available for bid to the SO's), that said there is a lot of noise about the possibility of direct entry pax fleet FO's.
Pay is on the ppjn wesite I think and depends on what country you are based in and what tax you pay as to your take home cash. Rosters are issued monthly on the 15th once again it all depends which base you are on and the type, europe tends to go to HKG and back and the US can do the occasional double shuttle from ANC before going home.
FreeSpeed
There is plenty of info on this site, you might want to be more specific with your questions if you want decent answers.
It seems like most are happy enough with their lot here.