I also have Windows XP and the same happened to me. After shuting down with Task Manager, all my windows shut down and I had to begin all over again.
I sent a message to the Office Team regarding this issue and this is what the team member suggested I do.
Dear Customer,
Hello, I'm Jorge with the Microsoft Office Live support team. I received your support request in regards to accessing your website. I understand this has caused some concerns and I'll be sure to assist you as much as possible.
I have reviewed your account and have not seen any issues with it; however, when I went to your site it did freeze Internet Explorer, I would suggest to review the content of the pages on your home page and try to remove certain content that you might have put on last. If that resolves the issue let us know. Otherwise, if the issue persists please provide the information below and we would also need authorization to access your account and reproduce the issue and check the website content.
I removed 3 of my flash movies which took care of the problem and allowed my page to fully download. The following day, I inserted the Flash movies again, everything downloaded and my site opens up. All is well now.
Hope this helps solve your issue.