Ah, the text-box. When the php-script sends data to the VB-application, the data is displayed in the textbox. This is complete nonsence right now, though, as the data sent range from chr(0) to chr(255) and only a few of these are alphanumerical characters (stuff that can actually be seen) while others are backspace, newline, tab, end-of-line, and a host of other special characters there would be very little point in putting in a textbox.
You can just delete it, and delete the line of code that says "Text1.text = Buf" d(^-^)