Multiple GitHub account on windows, ssh-add issue

first type in
exec ssh-agent bash

prompt will change, and now type in (replace you and your filename)
ssh-add /c/Users/you/.ssh/idrsayourfilename

This will get the ssh added to your agent on Windows. Works on Windows 7 at least.

Here's the original article [repost]
http://kevinpelgrims.com/blog/2012/07/19/setting-up-multiple-github-accounts-on-windows

On Macs, ssh-add should work smoothly