Hey Arie,
On any well configured machine TurboActivate will work if no problem whatsoever. We also make significant efforts to make TurboActivate work on poorly configured machines as well (even going as far as to fix broken configurations).
Long story short, this FAQ article is the best place to start: http://wyday.com/limelm/help/faq/#internet-error
And make sure you're using the latest version of TurboActivate (currently 4.0.5.1). We've made significant improvements to our internet code to handle *tons* of misconfigurations, injections, etc.