So far I've got a Stargate and DHD, SG-1, a MALP, an additional SG team, a bunch of Jaffa, a Jaffa First Prime, some Jaffa cannons, and a couple of models that should work as Goauld's. I haven't painted most of it yet though.
I was aiming for a desert scene with a pyramid and other statues, some of which I've got and using a tutorial like the one Kieron linked above (thanks Kieron!). I have been doing this for two years though so I'm not exactly fast moving.
Should I ever get it all painted then I was planning to use either 7TV rules, or a ruleset I got off the net which was written for 'Adventures through the Wormgate' or some similar 'definitely not Stargate' type name.