They all include Wimax unless otherwise noted. Gingerbread, Liquid, CM6, HD and Miui roms dont have wimax. The radio you have to flash separate, pretty much your last step after flashing a rom. Once you flash youre good for all future flashes.
These patches are good too.
http://forum.xda-developers.com/show...21&postcount=2
In case you didnt know, dont unzip, copy all the zips to your root folder of the memory card (this includes the rom too)