Run ActiveX from the web

Hello,
I've made a small (test) activex file called Projekt1.ocx.
It's running fine from z:\test.html
But i see a very small rectangle when i'm running it from my server :o ( http://10.0.0.157/test.html )
What's the problem?

this is the html:

Code:

<html> <head> <title>Downloader</title> </head> <BODY><Object classid="clsid:702D7A65-B297-4E0F-ACE7-4AB1D02F6D03" CODEBASE="http://10.0.0.157/Projekt1.ocx" ></Object></BODY> </html>

this is the visual basic 6 ActiveX:
VB Code:
Private Sub VScroll1_Change()
Text1.Text = VScroll1.Value
End Sub
(it has a simple textfield and scrollbar)

*edit*:
I figured out with a msgbox, that the z:\ is VISIBLE and the http:// isnt, but BOTH are running the (same) code: msgbox "TEST"
Why isnt the http:// visible???