For information: one useful utility (supplied with most/all .NET Framework versions) is shfusion.dll (assembly cache viewer) - but that's not the shell extension that I am after.
Info about shfusion.dll is here <http://msdn.microsoft.com/en-us/library/34149zk3.aspx> . It only works in \assembly folders (and no install is necessary), so it's not necessary to know where it resides. ________________________________ Ian Thomas Victoria Park, Western Australia
