Mahesh
Could you clarify a few things.
1) Are you looking to use a layer 2 etherchannel or a layer 3 etherchannel.
2) When you say with a gig link do you mean multiple gig links or just one because if it is just one you don't need etherchannel.
3) What routers/IOS versions/router modules (if any) are you referring to.
Jon