thank you for your answer. Ed's code is very powerfull but instead of :

FOR EACH oInstance OF oIEColl

you should write :

FOR EACH oInstance in oIEColl

this idea comes from Erik Moore #010229.

i have now another problem.
i want to write a program that is started with windows and works in memory.
whenever an IE instant starts this program is activate.
how can i do it ?