There is a way, you need to buy FPSPack Pro. You can find it at
http://www.rastaworld.com/content/view/29/43/. Here are its features.
Features:
* Shareware mode - includes a Key Generator to create keys to send to your customers to unlock the full version of your game. Set a time limit on how long the game will play if not registered.
* Custom splash screen - select an image to be displayed at the start of the game.
* Custom music - Play MP3 and other audio formats while your game unpacks.
* Custom settings screen - allow users to custom bind their own key settings to play your game. Also allow them to set the screen resolution you game will be played in.
* Content Protection - FPSPack helps protect your game content such as models, audio, and scripts.
* Skins - choose from more than 50 skins to give FPSPack a custom look.
* No Branding - you will not see any reference to RastaWorld or FPSPack in your packed game.
* and much more...