Why does all Apple software think that my PC is an i-pod?

When ever I download Quicktime (for windows) it resets my screen configuration and it looks like an i-pod but enlarged to fill the whole screen (low resolution and grainy). I can't seem to find any settings menus to change or reset it and Apple are simply impossible to contact. I have uninstalled and re-installed it several times and I always end up with the same result.

It's not just Quicktime, this also happens when I try to view the Apple website, it is hugely annoying and it means that I simply can not be bothered to use any Apple products (not really a bad thing as I only want Quicktime, I'm not in the least bit interested in owning an i-pod or being lumbered with i-tunes, I don't like either).

I have had Quicktime in the past and it worked fine, but as I can't get any assistance from Apple, I wondered if any of the Yahoo crew could offer any help..