I want to thank all of you interested in InfoPath. I became a TOP 100 contributor on the InfoPathDev.com website, and I see several times that the solutions I gave are working.
Also when searching for How to use Cascading Dropdown ListBoxes with InfoPath Services (webbassed) I see many companies implemented the out-of-the-box solution I proposed in my article and many others are using the link in their blogs and replies on forums.
Thanks!