Autodesk DWF Viewer

[#1]

I'm trying to render a .dwf file in Internet Explorer 7 running on Microsoft XP Service Pack 3. I'm getting this error: Your current version of Design Review does not support files of this type. Any ideas? In IE8 it renders but it's very small, as if the call to ExecuteCommand('FITTOWINDOW') isn't working. If I use whip.cab instead of dwfviewersetup.cab it works fine, but the whole point of this project is to upgrade from whip.cab to dwfviewersetup.cab. I'll attach the problematic .dwf file. Any ideas what's causing this behavior? Here's my object tag:

    <object id = "LASERMARK"
        classid = "clsid:A662DA7E-CCB7-4743-B71A-D817F6D575DF"
        codebase="../bin/DwfViewerSetup.cab#version=8,1,0,87"
        style="COLOR: black; TOP: 5.833in; LEFT: 2.3in; WIDTH: 3.5in; HEIGHT: 1.083in; POSITION: ABSOLUTE;"
        border="0" VIEWASTEXT>
        <param name="Src" value="579846.dwf">
        <param name="PaperColor" value="16777215">
        <param name="BackColor" value="16777215">
        <param name="UserInterfaceEnabled" value="false">
        <param name="PaperVisible" value="false">
    </object>

[#2]

Thank you for your questions.

For the error " Your current version of Design Review does not support files of this type", please insure Autodesk Design Review was installed properly.

And to make ExecuteCommand("FITTOWINDOW") work, you should remove your script "<param name="UserInterfaceEnabled" value="false">".

Please let me know if I can be of any further assistance.