Installation of VCP (VirtualCOM) Driver

I want to install a VCP(VirtuaCOM) Port Driver. I downloaded the driver form http://www.ftdichip.com/Drivers/VCP.htm and extracted the folder.
In this folder there is a Makefile, a Rules.make, a ftdi_sio.c and a ftdi_sio.h.
I read in some other blogs to execute the
./configure
enter the command
make
sudo make install
but there is no configure file and when I do the make command I get an error.