gwnn wrote on 07/02/11 at 18:05:20:
Four pawns attack.
And you don't like 2.c4 e5 I suppose.
Well, here is the dilemma. If you want to prove an advantage you either have to play the Austrian Attack 1.d4 d6 2.e4 Nf6 3.Nc3 g6 4.f4 or the Argentinean/150 Attack 4.Be3. Both demand quite a lot of knowledge these days. If you want to cut on theory you have to give up that ambition. And like BPaulsen wrote, there is no guarantee that you actually wíll get that advantage, even with optimal play.
Now you don't really have the problem how to meet the Modern ánd avoid the KID, like 1.e4 players. The Averbach 1.d4 d6 2.e4 g6 3.c4 Bg7 4.Nc3 is logical for you. That gives you a little more choice against the Pirc.
A system that is quite dangerous here but not against the Modern is 4.Bg5. White still has the choice between a setup with f2-f4 and an Argentine-like Attack with f2-f3 and Qd2.
Another idea is 4.Nf3 (to avoid 4...h6) c6/Bg7 5.Bg5 and 6.Qd2 similar to the 150-Attack:
1) if Black castles, castle queenside, play Bh6 and storm with your h-pawn.
2) if Black doesn't (usually with ...c6 and ...b5), go for central pressure. You might consider castling queenside her too. Pomar-Larsen, Olympiade 1966 can be improved with the obvious 11.exf6.
3) Black's best is probably 5...h6 again. In practice White has done best with 6.Bf4 when Nc6 (not possible in case of 4...c6) looks critical.
You'll have to do your own work though. As far as I know nobody has written about this from White's point of view. The reason is probably that Bg5 is innocent against the Modern.