Hi Josifus,
I might be able to help out with how to change the e-mail notification sound in Outlook Express
Open Control Panel - Sounds Folder
Click the Sounds tab and Scroll through the menu, locate and select 'new mail notification'.
Click the browse button and select the sound file you want to use - click the triangle to try it out first.
Click 'OK'
Here is a site with some fun 'You've Got Mail' WAVs you might like to try.
http://www.ilovewavs.com/Events/GotMail/GotMail.htmIsisrose