How do you want to interface it? If you need it as a normal serial port, simply install the latest FTDI VCP driver (usually already present in any OS installation that is not from the stone age) and it should be accessible through NI-VISA as serial port.
If you try to do anything else, things might get a bit painful. 😀
If you want to program it through the shared library interface you need to install the FTDI D2XX driver which supports this device too. Then start using any of the LabVIEW interfaces that are out there. The one from FTDI itself is pretty old (LabVIEW 7.0) and is not properly adapted to work for 64-bit but should be a starting point.
I guess you have a lot of reading ahead. This would be a good starting point. Read the entire thread, and also follow the threads on LAVA mentioned in there. Yes it is a lot of information but with a simple "Please help" we have very little to start giving more specific information.