Any suggestions for how to play against an early d6 and c6?

Sort:
fryedk

 

Some local club guys like to play this setup a lot.  Any suggestions for how to play against it?  Positional/thematic ideas would be appreciated as well as specific variations!  Below is a 30 minute game in which my opponent played the line, and he got a big advantage (although he later messed up and I won).

 

 

hitthepin
Play d4, in a position like positions like the one in the diagram.