Ok, I found a link.
http://care.dlservice.microsoft.com/download/5/3/C/53C31ED0-886C-4F81-9A38-F58CE4CE71E8/9200.16384.WIN8_RTM.120725-1247_X64FRE_ENTERPRISE_EVAL_EN-US-HRM_CENA_X64FREE_EN-US_DV5.ISO?lcid=1033 Get one there.
It should ask you to download the manager, it is safe so get it.
Then...