This is possible only if the two versions have different classids (and different progids). Just having them in different folders doesn't help, because they will have the same keys in the registry and the last registered one will be the one in use.

Vlad

>Is it possible to have more than 1 version of an Activex control registered in a machine? Suppose I need to keep an old version of a
>certain Activex control being used by one application and at the same time a new version of the same control to be used by some other applications...; to do that, I need to keep these 2 different activex files in different folders and register them under different folders, right ?
>
>Thanks in advance.
>
>
>Kam Lee