Trip to Montana 07 - Need advice!!

Hi all, Im planning a fly fishing trip to montana pretty soon. I can
go for about any week between the middle of august and the end of
september. A little background - Ive fished in Colorado for 15 years,
and been up to the Madison river area twice - thats the area I want to
go again. I'll be driving.

My questions are -

1. What week - (I MUCH prefer dry fly fishing)
2. Should I stay at the Madison river all week or try Yellowstone,
Galaltin, Beaverhead, etc?
3. It has to be cheap. I dont mind camping, but would also like a
shower and a bed now and then. Any suggestions there?
4. This trip is all about fishing - maximizing time on the water, no
distractions like sight-seeing, etc!!

Thank you all in advance - this will be the last fishing trip Ill get
to take for a while so Im hoping to make it the best

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