Paul,
The Component Works ActiveX controls install with the driver software. According to the driver support page, the latest version of NI-DAQ that supports the Lab PC+ is version 6.9.3:
http://www.ni.com/support/daq/versions_legacy.htm
However, this may consist of a later version of CWDAQ than 3.0.1. The interface for the controls should be the same, so your old code should be compatible with the updated version of Component Works. If you run into problems, you may try installing prior versions of the driver, which you can find at this web page:
http://digital.ni.com/softlib.nsf/webcategories/85256410006C055586256BBB002C1293?opendocument&node=132070_US
Good Luck!
Tyler Tigue