Shoutbox

can someone please write me a script that will take the subject (and maybe the text) of the newest message from a webmail service and make it my nickname or psm?
i'll be autoforwarding my spamoetry from gmail to another email account, so it doesn't matter what email service this is written for, so long as it's free to sign up. maybe a disposable email service with rss? i dunno.
i might give this another stab, but it feels quite out of my league, programming-wise.

thanks.