Quote from dtan1e:
i recently bought a new laptop on win7, on msn the video cam has a tendency to freeze up, this never happen on my old xp, i have consulted with an array of IT experts and no one could figure it, so new doesn't mean its better
Because you describe the shortcoming in relation to a specific website, it sounds like a video codec issue.
Microsoft actually (believe it or not) has a great resource for Win7 users to get tech things answered. You can go to http://social.technet.microsoft.com/Forums/en-US/category/w7itpro and scroll down to the category of information you're looking for. I did about 3 or 4 questions on there and each was answered in less then a day.