I run installation of certain apparatus I have bought. Their installation CD dates back to 2008. It has drivers in two folders, one folder for Win98 and ME, another folder for Win2K, XP, Vista. I ran the automated installation. I can get the software come up on screen and all functions are allright, but I can not connect to my apparatus through USB-cable. The software tells me: "no serial port available" I am not an expert user with PC. I did point installed 3rd party software to update driver from CD disc folder of a Win2K/XP/Vista, with no help. Installation wizard installed this software in (x86) folder, which by my understanding is what it should be. I have a Win 7 Home Premium with 64-bit installation. I can not even try ther artificial XP installation environment since my Win 7 is not the higher end package. I do welcome any advice as how to proceed from hereon with my communication problem. Even long shot guesses are welcome. Thank you.