Error grabbing Heroku project using git

I just cannot grab my App's source code, as per the steps documented here - http://devcenter.heroku.co开发者_如何学JAVAm/articles/facebook#create_an_app

I have all steps followed correctly (as mentioned in a few other related posts).

• Valid Heroku account created.
• Logged into Heroku from command prompt.
• Uploaded a valid key
• Added the port 22 to the list of exceptions in my firewall settings.

[FYI : I'm on Windows 7]

Even after all these, I still get the following:

ssh: connect to host heroku.com port 22: Bad file number

Obviously, ssh to heroku.com fails as well.

Any help is greatly appreciated.