Instructions
Download the VCM Creator from "Grand Theft Auto Vice City" sites such as GTAForums, The GTA Place Forums or GTA-downloads. Unpack the installation files by double-clicking on the download file.
Double-click the application program. It will ask you to input your "Grand Theft Auto Vice City" game directory, which is on your main hard drive in the "Program Files" folder.
Run VCM Creator. It will ask you to input image files for screen shots as well as mod data files. Input these, either from your own created model or a downloaded one.
Type in information, such as mod name, designer and replacement files and click "Install." VCM will combine the supplied data and place it in to your "Grand Theft Auto Vice City" game directory.
Load the game and the mod will be installed and usable.