Shoutbox

i've got this script for a shoutbox off of hotscripts.. i just wondered if it was possible to have the php insert a new line (on the top of the .txt file) and put the new shouts ontop, so older ones are at the bottom.

Its a simple script that adds whats entered into the text input bit onto the end of the .txt file..

any ideas?

Thanks

p.s. shall i post the code?