mail-notification: need alert popup or icon

[Saurabh Siddharth <sid@xxxxxxxxxxx>]

Hi,
I am using fedora 4. I need an application that can alert me whenever i 
get a mail(pop3). I tried usinf mail notification. But it doesnt seem to 
work. I need something like a pop-up whenever i get a new mail or maybe 
an icon in the taskbar(like thunderbird has in windows) or maybe some 
animation in the taskbar like there used to be in fedora 3( a jumping 
penguin etc)
I see that i can configure mail-notification to run a command whenever a 
new mail arrives. but i dont know what command to give here so that i 
can get the desired alert.
thanks
sid