Pretty straightforward, fire up your favourite IDE and create a new DLL with it. To link the DLL at runtime in your Lite-C project, use LoadLibrary() and to resolve a symbol use GetProcAddress(). To link it with your normal C project... well, depends on your IDE and linker, but usually they should take care of it.
Shitlord by trade and passion. Graphics programmer at Laminar Research. I write blog posts at feresignum.com
