I used to have little scraps of paper all over the place with my logins and passwords on them.  This quickly became a nightmare, since I have over 300 of them!  Then I discovered RoboForm - it's a program that you install on each of your computers that remembers all of your logins and passwords for you.  It also remembers your address, credit card numbers, phone numbers, and just about anything else you can think of.  All of this information is encrypted behind a master password, so you only have to remember one password to unlock all of the others.  You can even write encrypted notes to yourself and store them for later retrieval - I use my notes for PIN numbers, important phone numbers, etc.

The best part of RoboForm is that you just click a button and it fills out online forms for you - in less than one second.  I save at least 30 minutes a day with this tool - give it a try.