I am not sure how to even do this or if its even possible.

In my main application in the menu I would like to add the word Update (But greyed out)

When you run the application and check the menu you can see the word Update, if you click on it, nothing happened, greyed out.

However, if I was to install an updater create elsewhere, so this time when the main application is run it detects a file abc.dll which is the updater utility and displays the updater.

Is this possible to do and how would I go about doing this?

All I need to know is the code to enter into the main application. I've got the updater set aside for this.

Thank you.