No problem being "Newbie", you therefore know the feeling of searching for something and you will be soon able to help.... I'm not specialist of this version, I'm wondering if the versions of PHP are OK.
Just a suggestion, as I don't know if you can do that.... Can you grab through the Internet the latest version of WAMP, and install it locally on your windows computer. After done, launch WAMP (double click on the W icon), the browse you hard drive and copy the content of the unzipped package of Chamilo in the www folder (directory). Launch your web browser and try to install, using 127.0.0.1/<name of the directory for Chamilo>
This is to ensure the zip is not corrupt. If you can install locally, you may want to troubleshoot from other route. If staring locally it even doesn't install, you'd rather download again the zip file.
Again I hope an expert will read this part as I'm not used at all on 2.x revision.
A friend of mine copied one of the configuration files (I uploaded a file with 'dist' in it to FTP, but a normal 'config' file was missing) and made a normal 'config' file of it that we uploaded to my FTP. We also chatted with a technical assistant from my hosting website support team and one or the other solved the problem.