My Intel Mac has a User Agent String that is Reading it as a Power PC (PPC)

Hi. I am hoping someone might be able to help me with an unusual situation. I have been trying to watch online streaming of the Olympics with my MacBook Pro (2.2 Ghz Intel Core 2 Duo). I have updated my browsers to the newest versions and have installed the newest Silverlight from Microsoft in order to ensure compatibility with the nbcolympics.com website. Even so, when I try to get onto the video section, it tells me I have browser or system incompatibilities. I corresponded with the tech person on the olympics website and he looked at my user agent string which (with firefox) reads as follows: "Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.4; en-US; rv:1.9.0.1) Gecko/2008070206 Firefox/3.0.1" I do not have a PPC mac, it is an Intel Mac. Because the olympics website reads it as a powerpc I cannot get onto the video section. Does anyone know what's happening? Ive searched user forums throughout the internet and have not found an answer. Thanks for any help or direction.