Please stop apologizing for not having English as a first language, your English is fine and easier to understand than a lot of people that speak it native
In the other hand, i have downloaded the Quake 1.27 Game Source
do not use that source, it contains a security bug, if you must use id's code use the latest 1.32 source available on their ftp (I believe they fixed the bug after the icculus.org guys found it, at least they released fixed binaries for their games).