FIXED THIS PROBLEM! GOT ANOTHER!
Okay, I can get it to compile now...I just needed to specify my kernel directory. RH7.3 puts the original installed kernel in /usr/src/linux-2.4 for the 2.4.18-3 kernel.
For ease of installation purposes I symbolically linked the directory.
This can be fixed using the following commands:
ln -s linux-2.4 linux-2.4.18-3
Then run the makefile and things should smooth out.
However, I am still getting a lot of unresolved symbol errors. Has anybody had a similar problem?