Hi Guys,

To get started with Heroku, you need a public key. If you do not have one in the

C:\Users\<YourUsername>\.ssh folder, then you get this error

D:/Program Files (x86)/Heroku/lib/heroku/auth.rb:195:in `read’: No such file or
directory – C:/Users/Romiko/.ssh/id_rsa.pub (Errno::ENOENT)
        from D:/Program Files (x86)/Heroku/lib/heroku/auth.rb:195:in `associate_key’

 looking at the source code, line 195 is ssh key generation. So what we need to do is use a utility like GitBash to do this for us:

Instructions

TO get up and running with the Heroku Toolbelt on windows ensure you read:

http://devcenter.heroku.com/articles/quickstart

Once you have read that and installed Heroku toolbelt

http://assets.heroku.com/heroku-toolbelt/heroku-toolbelt.exe

then install Git (Or use the Git bash if already installed)

http://msysgit.googlecode.com/files/Git-1.7.8-preview20111206.exe

Now, what you do is follow all the instructions here, you might as well ensure you have a GitHub account, its nice to put your code in a repository if developing:

http://help.github.com/win-set-up-git/

You should then have these files (you might not have known hosts), if you did not connect into git

The Heroku batch file will look for the id_rsa.pub file and use it to connect to the cloud servers.

Once this is done, you can then go back to the heroku.cmd execution and login

D:\Program Files (x86)\Heroku>heroku login
Enter your Heroku credentials.
Email: ROMIKOV@GMAIL.COM
Password:
Found existing public key: C:/Users/Romiko/.ssh/id_rsa.pub
Uploading ssh public key C:/Users/Romiko/.ssh/id_rsa.pub

That is it, so hope this gets you started on Heroku

Source: http://romikoderbynew.com/2012/01/25/getting-started-with-heroku-toolbelt-on-windows/