how do i delete just a specific website login for firefox?

[blahxyzblah]

i have ff 2.0 and i was wondering how do i delete just my myspace saved p/w and login. cause i changed my password, but when i type in my new p/w, it doesnt prompt me to save the new one, so i think if i delete my old one, and i type in my new one, itll ask to save.
thanks

 

[gamerman4]

Tools>Options>Security>Show Passwords find password you want to remove and remove it

 

[StrangleHold]

Tool-Options-Security