Yeah, I'm a software architect and have done research deep into the frameworks. It depends from where you're running your code. If you're running it locally, local assemblies have FullTrust which means they can do anything. From a network share, some things are allowed. Just look at the code group - taking into account the appropriate membership conditions - and you'll see what is and what isn't allowed. -----BEGIN GEEK CODE BLOCK----- Version: 3.21 GCS/G/MU d- s: a- C++++ UL@ P++(+++) L+(--) E--- W+++ N++ o+ K? w++++ O- M(+) V? PS-- PE Y++ PGP++ t++@ 5 X+++ R+@ tv+ b(-)>b++ DI++++ D+ G e++>+++ h---* r+++ y+++ -----END GEEK CODE BLOCK-----

You dont need to make an activeX, just make a control library .dll file with a class extending the Control class. It is strange that microsoft didnt tell anything about it. You can search for yourself in msdn. Sergiu.