VirtualBox problem

[Richard B. Pyne]

I have decided to try installing VirtualBox to run a 32bit lunar virtual 
machine on my 64 bit system, but I have run into a, hopefully minor, 
problem. VirtualBox wants mkisofs, but I'm not sure which module will 
provide it.

Checking for xslt: found, OK.
Checking for mkisofs:
   ** mkisofs (variable MKISOFS) not found!
Check /usr/src/VirtualBox-4.1.8_OSE/configure.log for details
Creating /var/log/lunar/compile/VirtualBox-4.1.8.bz2
! Problem detected during BUILD

lvu search mkisofs returns:

cd/graveman
cd/cdw
cd/xcdroast
cd/dirsplit
cd/tkdvd
cd/dvd+rw-tools
gnome2/desktop/brasero

I can't see that any of those modules provide mkisofs.

Thanks for any help.

--Richard