I guess you are right, I use a HFC-ISDN-card and therefore anabri-asterisk-zappri-florz-1.2.6-6.i686.rpm.
But you do have /lib/modules/2.6.9-42.0.3.EL/misc/ ? Can you start asterisk after copying that to /lib/modules/2.6.9-42.0.10.EL and rebooting with that kernel?