In the NI-DAQ 7.0 Readme file you will find that the Lab PC 1200 is no longer supported by the NI-DAQ driver. This is one of our legacy devices as will not be ported to our new driver.
If you wish to use this board, you will have to install version 6.9.3, or previous, of the NI-DAQ driver. You can find version 6.9.3 on our website at http://www.ni.com by clicking on Download Software or by using the following link directly.
http://digital.ni.com/softlib.nsf/webcategories/85256410006C055586256BBB002C1293?opendocument
Regards,
Justin Britten
Applications Engineer
National Instruments