choose "use script" instead of the list and add the sections for the components you want to install.
see for a list of the options:
(scroll down for a bit on the right hand side)
Thanks! I'll take a look.
I've actually got a lot further with the NLB part of provisioning.
I am just having trouble specifying the secondary IP Address.
setupmgr.exe suggests that
IPAddress = x.x.x.x, y.y.y.y
will work, but that just fails as it gives up, and uses dhcp instead.