luhman.org

Here are some good resources in the area of SSH keys :

Key-based logins with PuTTY - Excellent How-To with pics

• http://www.howtoforge.com/ssh_key_based_logins_putty

Good overview of SSH keys - including optional hardeners

• http://www.eng.cam.ac.uk/help/jpmg/ssh/authorized_keys_howto.html

Good overview of SSH keys, including Keychain to remember passphrases

• http://www.ibm.com/developerworks/linux/library/l-keyc.html
• http://www.gentoo.org/proj/en/keychain/

Note PuTTY's Pageant is a Windows form of Keychain