SEAL is a 32-bit graphical user interface (GUI) for DOS. It supports many advanced features, such as a dynamic linking system (XDL), sound and other multimedia functions (SFA), multilingual support, and more! The minimum system requirements are as follows: A 486 processor or better, At least 8mb of RAM (you may be able to run SEAL with less, but it is not recommended), A video card which supports at least 640x480 resolution in 256 colours, although 16-bit colour is recommended. At least 1.6mb of hard disk space (more recommended). MS-DOS 3.0 or higher (or compatible - DR-DOS, PC-DOS and FreeDOS all work with SEAL).....(free).....