Embroidery Effect on Windows 7

Hello,

I have used Corel X3 on a XP & Vista machine with the Drawstitch Embrodiery Effect plug-in.  However, when I install it on Windows 7, the Embroidery Effect is not showing up in Corel, even thought both programs seemed to install successfully.  Does anyone know if this is a Windows 7 problem, or am I missing something?

Thanks,

Geoff