Installing CentOS via HTTP

[rgm at htt-consult.com (Robert Moskowitz)]

When, after starting the install, you get a list of places for the 
distribution, listing things like:

CDrom, NFS, FTP, HTTP, Local hard drive

What is expected on the HTTP url?  The ISO images?

Help please, as the system I am installing on, boots off of CDrom, 
but then the CDrom seems to be so old (Toshiba NW24XCD), that there 
is no Linux driver for it in the base install.  And I cannot figure 
out how to get it to read from the CD, but I DO have LAN access....