This is basically the easiest way to enable SSH with TortoiseSVN (and most importantly WITHOUT using putty)
- open the TrortoiseSVN settings and click Edit for SVN config file.
- find the ssh line under [tunnels] section
- edit the line to include the path to tortoiseplink.exe. Here is a sample :
"ssh = C:\\Program Files\\TortoiseSVN\\bin\\tortoiseplink.exe -i c:\\private.ppk -l marius"
The first path is to tortoiseplink, the second is the path to your private key and the l parameter is for your user name (if your private key is protected with a password you must also inlcude this). Save and exit.