Here is the Link to download your Software – LinkConn 100,  as well as attachments that will provide a visual understanding on how to hardwire your Equipment to PC.
 
LinkComm  100 download
ftp://file.link4corp.com/software-download/LinkConn_100_v1.6.0.0.zip
 
Driver for USB to Serial Cable
http://www.ftdichip.com/FTDrivers.htm
 
This link will show you how to install the driver from device manager
http://www.sevenforums.com/tutorials/97061-driver-install-device-manager.html