I recently got Schengen Visa for my Business trip to Amsterdam. Now the plans have changed and I need to go to Geneva in stead. Can I do that? I mean I had gotten the Visa from the Consulate of Netherlands in Chicago and had to specify Amsterdam as my port of entry while I filled the application.

Questions I have:
1. Can I fly directly to Geneva from the US though I got the Schengen Visa from the Consulate of Netherlands and said my port of entry was going to be Amsterdam?!
2. If thats not possible, can I fly to Amsterdam and take the next flight to Geneva?!