[CentOS] kernel-devel largesmp or ELlarge?

I'm having trouble updating my iscsitarget modules, and it seems to be
related to a naming convention mixup?

here's the output of the build command:
[root at vmhost ~]# rpmbuild --rebuild --sign
iscsitarget-0.4.14.96-0.amherst.src.rpm
Installing iscsitarget-0.4.14.96-0.amherst.src.rpm
error: Failed build dependencies:
        kernel-devel = 2.6.9-42.0.10.ELlarge is needed by
iscsitarget-0.4.14.96-0.amherst.x86_64

here's everything my system knows about kernels:
[root at vmhost ~]# rpm -qa|grep kernel
kernel-utils-2.4-13.1.83
kernel-smp-2.6.9-42.0.8.EL
kernel-largesmp-devel-2.6.9-42.0.10.EL
kernel-largesmp-2.6.9-42.0.10.EL
kernel-devel-2.6.9-42.0.10.EL
kernel-smp-devel-2.6.9-42.0.10.EL
iscsitarget-kernel-smp-0.4.14.78-2.amherst_2.6.9_42.0.8.EL
kernel-smp-2.6.9-42.0.10.EL

the kernel I'm currently running:
[root at vmhost ~]# uname -a
Linux vmhost 2.6.9-42.0.10.ELlargesmp #1 SMP Tue Feb 27 09:59:08 EST
2007 x86_64 x86_64 x86_64 GNU/Linux

kernel-devel-2.6.9-42.0.10.ELlarge doesn't seem to exist.  but I did
find kernel-largesmp-devel, but that didn't help

I'm not sure I need to run the largesmp kernel, but it does seem to
gain me an extra gigabyte of ram when I run the "free" command.  This
box has a single quadcore xeon and 16 gigs of ram in it.

Any thoughts or suggestions from the list?

Thanks,
Gordon