Contact Form 7 : Expanding Options?

I updated to the newest version of Contact Form 7.

Here is my question, is it possible for the form to display certain options, only if particular options are selected? For instance, I use this form for a home improvement company and one of the questions is, “What sort of products are you interested in?”. They can choose from windows, doors, etc, as a series of check boxes. If they choose “windows”, I would like the form to ask, “How many windows are you planning to replace?” as a text field.

If they are interested in doors, the # of windows question isn’t necessary.

Is something like this necessary. Are there codes built into the form that I can use? Just curious…

Appreciate your help.