Follow these instructions to install rAthena on Windows OS.
This installation is using CentOS 6.5 64-bit as OS, gcc as compiler.
Installing git environment to clone rAthena.
NOTE: If you willing to not update rAthena in future, you can skip this step
MySQL is used as DBMS (since rAthena does not support TXT server anymore).!
You need to install PHPMyAdmin separately.
Before compiling, please be aware of Choosing Packet Version and Knowing core.h Feature.