Iceweasel to appear as Firefox
Is there a way I can make Iceweasel 3.x.x appear as Firefox 3.x.x. I come across some websites that say my browser is un-supported when it is mostly Firefox slightly changed to suit Debian's needs. I know in Windows this would probably be as simple as a registry hack, but I'm not sure how to go about this under Linux. Is it possible? If so, how?