Windows Shell Extensions - Property Pages

I been looking to create a property sheet (the tabbed pages displayed when you right click on a file and select properties)

I found a vb.net wrapper dll w/ sample projects http://www.mvps.org/emorcillo/dotnet...tensions.shtml
but i could never get the sample to work. the shell is executing the code but the property page is not being displayed. (i did a Msgbox "Testing" in the Property Pages constructor)

This C# sample worked after restarting the shell... but it uses a C++ wrapper to handle a callback (i would like to do it in .net if possible) I would also rather not port all the code if i dont have to (getting this to work was just to make sure it wasnt some SP2 security setting)
http://www.codeproject.com/cs/miscct...pertySheet.asp

Any ideas why the vb.net sample does not work?