Agilent 548xx multiple channels

I downloaded the driver off Ni's site and am able to configure scaling and trigger and read from one channel. Problem is my client's testing requires sometimes reading 2 and sometimes reading 3 channels also. The configuration sub-palette has a VI for configuring 2 channel mode or 4 channel mode, but I can't get this working. Tried changing the order that I configure things in, no help there. Anyone using an old Agilent scope and reading multiple channels, or know of an example along these lines?
Thanks,
lmd2