use Inet to open CGI

Hi,

I tried to use Inet to open a CGI page like this:

RichTextBox1.Text = Inet1.OpenURL("http://www.XXX.com/cgi-bin/XXX.cgi?search=XXX&YYY=ZZZ")

However I'm only returned half of the source code when compared to the source code that I get from [view source] in IE. What's happening? How can I get the full source code? Thanks!