Are you trying to do a network install? Wouldn't it be easier just to download the ISOs
(not the SRPM discs, but the normal ones), burn those to CDs, and then just shove those into your computer while booting? That's what I always do...
P.S Please be more specific, because I'm not exactly sure what you're trying to do...."Install over HTTP/FTP" can be interpreted as either "download the ISO via HTTP/FTP", or "do a network installation".