I don't think you can get a full set of includes from SCAR… you have to download a lot of software… The best stuff is TortoiseSVN, and then checkout all stuff from a URL into the SRL folder (which is probably empty at the moment).
What SRL includes are is basically shortcuts of common procedures and functions. All good scripters use includes so if you don't have includes, the script you have is useless.
I will have that link for you to checkout from in a moment. But you should definitely download SVN and Tortoise SVN. You can find those from Google
EDIT: Ok, I have the SVN checkout URL for Reflection, another important include. Once you have SRL you should create a folder called reflection in SRL/SRL (should b with core and misc.) this is the link =
http://scarreflection.googlecode.com/svn/trunk/Also, here is a indepth guide for getting your SCAR ready for autoing, from our very own SRL wiki
http://www.villavu.com/wiki/index.php/Installing_and_Setting_up_SRLHope I've helped.