PuTTY Web Installer
This file will download and install PuTTY (a free SSH/telnet replacement for Windows). When asked what to do, choose Open/click yes. Note that it will always install the latest version of PuTTY and the associated files available from the PuTTY site at http://www.chiark.greenend.org.uk/~sgtatham/putty/. It also creates start menu icons and has an uninstaller.
You can rerun this installer in future to upgrade your PuTTY to the latest version automatically!
puttyinstaller.exe - 368KB (Please see below before downloading, this is from 2003)
2008 Update
You should really use the one supplied by the official site:-
http://tartarus.org/~simon/putty-snapshots/x86/putty-installer.exe
This is current and will probably remain current. Whilst my installer seems to still work it has been many years now since it was created.