did you try this?
(From logix4u website)
Installation
You need to put the driver file in your System32\Drivers folder. Make sure, if your using XP/2003 x64 Editions, to put the 64bit version there (hwinterfacedrvx64.sys) instead of the original 32bit version (hwinterface.sys)
At the time I wrote the above tutorial, I didnt have win7 64 bit, but I just copied what another user found that worked for him on his 64 bit system.
I do have 64 bit on my PC right now, so I need to start troubleshooting this for myself.
But for now, place the hwinterfacedrvx64.sys (from your logix4u download) into the C:\Windows\System32\Drivers folder.
Please let us know if this works, because Im working midnight shift this week and it may be a few days before I can mess around with it.
Edit: Ok, I just tried the above and it's not working for me. So I got to put on my thinking cap.
It may take me a day or two due to my work schedule. (And the general cloudiness of the brain that comes with it.)
Let me know if you come across anything.
My PC is 64 bit, and even though I have a connector for parallel printer port on my motherboard, I didnt get a DB25 connector for the case with my motherboard, so I cant go very far with my tests, but I should be able to at least install inpoutx64 and make sure mrotate can talk to it.
Maybe I need to address this issue and make a mrotate64?