Hi Proxus,
I use a nokia mobile (now a 6310) with my laptop on IR and used to use a 7110. What problem are you having? Is the infrared port working? or is it that you can't get the phone to talk via the infrared port?
If the infrared port is working, use the Nokia Data Suite disk that came with the phone and install the Nokia Modem. When it asks you if you wish to configure for cable or IR click IR. It may ask what comm port you wish to use to connect. Choose the comm port that is assigned to your infrared. (You can find this is in the control panel under SYSTEM SETTINGS. Click on DEVICE MANAGER Tab and scroll down unitl you find your IR device. Right click on the IR Device to uncover its properties. This will tell you what Comm Port your IR device uses.
Hope this helps.
FWyg