Hello Cyrano,
This Developer Forum focuses on the National Instruments product "Measurement Studio for Visual Basic" (formerly known as ComponentWorks). Our goal is to help people to better integrate this product into their test, measurement, and automation applications. Your question directly pertains to the Microsoft Internet Transfer Control. I think you would find an increased number of responses that are better focused on your question if you would repost it to a forum that specializes in general VB and internet programming. Good luck!
Jeremiah Cox
Applications Engineer
National Instruments
http://www.ni.com/ask