I've never done a network install, but I'm assuming that you need to be able to boot to a functional kernel to start. That means that the kernel you boot from would have to have wireless capabilities compiled in. If you can boot from that kind of a kernel, then you might be able to install drivers for your wireless card. However, you'd probably have to pre-compile the driver modules and include those on your boot disk since you aren't going to have things like the kernel source or a functional gcc to compile with.
I gotta believe that buying a CD or two is gonna be a WHOLE lot less painful.
anyone ever gunna respond to anything on this site???
People donate their time to this site and you are not entitled to an answer at any point. The fact that you haven't gotten one until now is probably more of a reflection on your question than on this site.