I talked to Alex, and he explained the steps necessary to get the real time linux kernel installed. It basically went like copy the files from c1iscex (the one he installed last month) in the directory /opt/rtlidk-2.2 to the c1sus locally. Then go into rtlinux_kernel_2_6, and run make and make install (or something like that - need to look at the make file). Then edit the grub loader file to look like the one on c1iscex (located at /boot/grub/menu.lst).
This will then hopefully let us try out the RCG code on c1sus and see if it works.