Heinrich;
I believe a good solution for your issue, is, as you have two machines and one already has some DAQ boards, to take advantage of the NI-DAQ RDA (remote device access).
You can configure a RDA server, and create some virtual channels on your Lab PC, and access those virtual channels, remotely, by your test PC. By doing that, you can run a VI acquiring data remotely, using the DAQ boards on a different machine.
Hope this helps.
Filipe
Applications Engineer
National Instruments