The iTunes Store isn't loading on my Windows 7 laptop.

Hi, I have been a longtime user of itunes, without any real big problems until last night. I downloaded the latest version 10.5.1 last night

on my laptop that has windows 7, and I can access everything except the itunes store. The bar gets about halfway accross (like it is

trying to connect, but it just disappears entirely). I am not getting any error messages, it just won't connect. I am not having internet

problems, because my desktop is working fine. Before I downloaded 10.5.1, I was using an older version, and had no trouble at all, so

I don't understand why all of sudden I am? Does 10.5.1 require anything special that the older versions did not? I am using both Spy

Hunter and Kaspersky and my understanding is they can sometimes cause the itunes store not to work. Although, like I said it was

working fine with the older version, so again I don't understand why it is not working now? Any help you can provide would be appreciated!

Thanks, Scott