Hi @ormondron and @BitLost
Bitnami Stacks have their own Apache, PHP, etc, but we also have Bitnami Modules in order to put applications on top of LAMP/WAMP/MAMP or XAMPP. If you are using XAMPP, you can find the Joomla! module in the following link
The installation process will ask you for the stack installation directory and you have to set the XAMPP directory (
C:\XAMPP in your case) here.
I hope it helps.