In the project preferences, click on 'build events' and then 'prebuild events'. Now enter ' C:\ProgramFiles\LiteC\acknex.exe ".\yourscript.c" ' in the first field and save.
The only annoying things is that VS builds the project after you closed the window. There doesn't seem to be a commands to terminate the build process.
As I work with the german version the names may be different.
Edit: Ok simple solution to stop the build; Just write some crap in the next line and the compiler will stop