When you first install ProShow Gold 9.0.3797, you'll be prompted to register the software using a valid registration key. This key is a unique code that unlocks the full features of the software, allowing you to access all its capabilities and benefits. Without a registration key, you'll be limited to a trial version of the software, which may not offer all the features and functionality you need.

The 9.0.3797 build is often cited for its stability and comprehensive toolset: