I think this is by far the most user-friendly RTLinux Installation Instruction Set that I have come across. I know this is probably a couple of months late for you but please let me know if it helps.
RT-Linux installation guide.
Linux kernel 2.4.18: linux-2.4.18.
RT-Linux kernel and patches: rtlinux-3.2-pre1.
RT-Linux manual pages: rtldoc-3.0.
WebCT may be used to view your grades.
lp_solver is available now.
Rt-Linux Getting Started Document.
I suggest taking a printout of the first RT-Linux Installation Guide, and then following the installation through step by step. I could not properly install using Dinaker's Installation Instructions - i think I am going wrong somewhere with my steps.