In this thesis, an interface circuit was built to connect a mobile vehicle controller to a PC (Personal Computer) via its LPT (Line Printer Terminal), this PC was a node of a LAN (Local Area Network) with other PCs, and it was considered as a server, and the other PCs were considered as clients. Every PC in this LAN had the ability to control the mobile vehicle manually using either a keyboard or a mouse.A webcam was mounted on the vehicle and plugged in the USB (Universal Serial Bus) of the server, this webcam was used to transfer video to the server then to the client via LAN. A security method was applied to all PCs in this LAN to access the control of the mobile vehicle, this security method was a simple user name and password authentication method, and it was used to avoid unauthorized access. Beside of the manual control of the vehicle using a keyboard or a mouse, the vehicle could be controlled automatically by following a bright object from the picture captured by the webcam which was mounted on the mobile vehicle. Microsoft Visual Basic 6.0 was used as a programming language for implementing the work of this thesis with support of other software controls which were obtained from the Internet like LPT control and video capturing.