Libmysql windows

Download: http://www.mysql.com/downloads/mirror.php?id=377977
Download: http://ftp.digitalmars.com/coffimplib.zip (you will need this to make libmysql usable for DMD)

Extract the mysql package somewhere to your computer and copy the libmysql.dll somewhere to your PATH (or simply to the folder which croc-fcgi.exe is run from). Then copy the libmysql.lib to modules/db/ and run this in there:

coffimplib libmysql.lib -f

That will convert the import library so DMD can use it.