Content packs such as Facial Expression Clips come as self installing executables. All you need to do is double click the file after you have downloaded it and follow the instructions.
Once installed, where they can be found within Crazytalk depends on the type of content. For the Facial Expression Clips they are found by clicking the Motion Clip tab while working in Script - Timeline.
Hope this helps.
Peter
Forum Administrator
www.reallusion.com