And how I struggled for this simple task. This is just in case you are new to this stuff

1. Get puttygen from http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html

2. Generate a private/public key using puttygen and save to C:\Users\home\.ssh

3. Copy the public key to https://cloud.engineyard.com/keypairs. I mean the actual public key string not the file

4. Launch your application from EY but ensure your environment setup has  the key from step 3

5. Launch your instance and wait till the ssh link appears on your dashboard

6. Copy the ssh link

7. Open up putty and paste into Session->hostname the copied URL (ensure leading ssh:// is deleted from the copied URL)

8. Under connections->ssh-Auth clikc the Browse button and select your private key file from step 2

9.  hit the open btn to log into your EC2 instance

 

Cheers