Home of PuTTY is http://www.chiark.greenend.org.uk/~sgtatham/putty/

To load a saved session, you can create a batch file like so:

ssh2host.cmd

start "" putty -load host.domain.tld

You can even start multiple PuTTYs at once:

ssh2host.cmd

start "" putty -load hostA.domain.tld
start "" putty -load sessionB

Export your PuTTY sessions & settings saved to the registry:

1. start regedit
2. Move to [HKEY_CURRENT_USER\Software\SimonTatham]
3. Export this tree to a file

Use pageant to load your private keys into memory. Create a batch file with the following contents and put it in the autostart folder:

pageant.cmd

@echo off
cls
 
start "" "C:\programme\PuTTY\pageant.exe" c:\keys\myprivkey.ppk c:\keys\myotherprivkey.ppk