Ok, at least please post a (verbatim) copy of the error message so that we can help. Whatever it is, it is easily fixed, so if you can't get useful help here, just begin at the beginning, so to speak, and check ALL of your internet preferences. Go to your ISP's homepage and see if they have something enabled, check your browser, check your process list (as suggested). It will be very important to check your firewall's settings, of course, assuming you have one. I don't know of any software that TechTV puts out, per se. They link to a ton of different software that might be the cause of your problem, but there's nothing malicious about anything they link to, so it's likely to be a matter of clicking a check-box somewhere.
Good luck, I need to hit the hay, sorry I couldn't be of more help