It is possible to use Lite-C in a C-Script project.
You will have to create everything as usually with C-Script and include one .c file into it:
Code:
include <Main.c>;


You can only have one function main in a project and it is not possible to share functions and variables between c-script and lite-c codes. Because of that you will have to create a startup function in the .c file to call all your Lite-C functions from. You also have to include the acknex.h in that file as well as all the other .c files you are using:

Main.c:
Code:
#include <acknex.h>

#include "PP_Bloom.c"

void LiteCMain_startup()
{
    PP_Bloom_init(40,50,50);
}


This is just written out of memory so I probably remembered something wrong but it does definatly work somehow similar :P

Lite-C Tut. 1 Lite-C Tut. 2 Lite-C Tut. 3 (en)
Shader Tutorial (ger)

http://www.slindev.com