[XFree86] Compiling xf86Elo.c into elographics_drv.o

[DOLLOFF, MATTHEW D. (MATT) (JSC-ER7) (NASA)]

I am currently running redhat 9.0 and using the default XFree86 (version 4.3.0-2).  I am trying to setup dual touch screen monitors (using twinview) and I am working on modifying the xf86Elo.c to allow me to use both touch panels appropriately.   I am wondering if there is some sort of tutorial out there that gives me a run-down as to how to compile the source code to make the new driver file.  I am relatively new to this whole process (obviously), so any help would be greatly appreciated.   Thanks, Matt