Is it possible to use the Low-Level Support Driver from LabWindows/CVI in a Measurement Studio (Visual C++) application?  I need to split one of the PORTC ports on a PCI-DIO-96 card (4 bits in, 4 bits out).  Since that configuration isn't supported by NI-DAQ I'm trying to use register-level programming (which requires a low-level driver).  If I can use the CVI driver, how do I use it/where can I find documentation; and does anyone know of a better/alternate way to accomplish what I want to do?  
Thanks