.htaccess pages?

I saw the tutorial for .htaccess custom pages, and had a question for you gurus :smiley:

Can you make a custom page for if you exceed a bandwith limit? (eg, if you exceed the 5GB data transfer limit on a web hosting server) If so could someone either post here, or PM me the information as to how to go about it, it would be most appriciated, thanks in advance

DreadWolf