1. Download and install the latest Java2 runtime from Sun Microsystems. At the time of this writing, Java 5.0 has been just released and it´s MUCH faster than previous releases. Get it from Sun.com´s page by going to the download web page linked HERE. A permanent redirector that always goes to the last available release has been created on my os2guru.com domain and is linked HERE.
2. Download MR Postman from the program's web page at sourceforge.net. Right-click on the link, select "Save as..." and dump the ".jar" file into your Desktop.
   
3. Install it by double-clicking on the install file and following the installation dialogs (it's as easy as installing a Windows program by double-clicking on a "setup.exe" file).
4. Download the updated webmail scripts from THIS LINK. This is needed if you want to get GMAIL working.
5. Go to your favorite POP3 email client, and proceed to change the following options:
6. Your pop3 e-mail "username:" should be configured as "username@gmail.com" (or username@yahoo.com etc depending on the webmail service you want to access).
7. The pop3 server should be configured as "127.0.0.1" (unquoted)
   
8. The "pop3 server port" should be changed from the default (110) to port 11110
9. Make sure you enable the option labeled "leave e-mails on server" in your pop3 email program if you want to prevent your mail-downloading from erasing your email from the webmail server after download (most of use for Gmail users who wish to leave e-mail online).
   
10. That's it!. Double click on the new MRPOSTMAN icon to launch the program, and then use your favorite e-mail program (Outlook, Eudora, Mozilla Mail, Thunderbird, Netscape 7.2, etc) to download your mail!