Today you need to remember many passwords. You need a password for the Windows network logon, your e-mail account, your homepage's FTP password, online passwords (like website member account), etc. etc. etc. The list is endless. Also, you should use different passwords for each account. Because if you use only one password everywhere and someone gets this password you have a problem... A serious problem. He would have access to your e-mail account, homepage, etc. Unimaginable.
But who can remember all those passwords? Nobody, but KeePass can. KeePass is a free, open source, light-weight and easy-to-use password manager for Windows. The program stores your passwords in a highly encrypted database. This database consists of only one file, so it can be easily transferred from one computer to another.
KeePass supports password groups, you can sort your passwords (for example into Windows, Internet, My Homepage, etc.). You can drag&drop passwords into other windows. The powerful auto-type feature will type user names and passwords for you into other windows. The program can export the database to various formats. It can also import data from various other formats (more than 20 different formats of other password managers, a generic CSV importer, ...).
The program also ships with a strong random password generator (you can define the possible output characters, length, generation rules, etc.).
Best of all, it's free!