Use a command line option to load a saved session with the right IP address
The `-load' option causes PuTTY to load configuration details out
of a saved session. If these details include a host name, then this
option is all you need to make PuTTY start a session.
You need double quotes around the session name if it contains
spaces.
If you want to create a Windows shortcut to start a PuTTY saved
session, this is the option you should use: your shortcut should
call something like
d:\path\to\putty.exe -load "my session"
(Note that PuTTY itself supports an alternative form of this option,
for backwards compatibility. If you execute `putty @sessionname' it
will have the same effect as `putty -load "sessionname"'. With the
`@' form, no double quotes are required, and the `@' sign must be
the very first thing on the command line. This form of the option is
deprecated.)