Safely identifying DAO on a workstation

[Christof Hanke]

How do I identify (e.g. in the registry) whether any DAO installation is on
a
workstation? I need this to develop a custom setup (using InstallShield)
which
installs DAO if and only if there is no DAO on a workstation.

Of course I can check the registry for a certain key value and do e.g. a
string compare for "DAO 3.5" or something like that.

Obviously that would fail if there is a machine without DAO 3.5 and onyl DAO
3.6. The code would then assume that it has to install DAO 3.5 though DAO
3.6 is already present.

Ok I easily could extend my check to DAO 3.6. But as you will understand I
do not want to change my setup code each time microsoft decides to ship a
new DAO version, let alone that I do not get notice if any of my customers
decides to update his machine.

So what I am really looking for is one unique key or CLSID I can check for
the presence of _any_ DAO version on the workstation.

Does anybody have any suggestions?

Thank you, Christo...@asOne.de