Option 1: You could always get a DolphinBar and set the wiimote to controller mode. If you need keyboard mappings you could probably also throw in JoyToKey or Xpadder.
Option 2: If you have a bluetooth dongle and don't want a DolphinBar, and you simply just want the wiimote detected as a controller, then the driver by Julian Löhr is probably the best and easiest route:
https://www.julianloehr.de/educational-work/hid-wiimote/
Option 3: If you want something more advanced then GlovePIE and PPJoy can be had here:
https://www.mediafire.com/folder/133maxr70sw5o/GlovePie_%2B_PPJoy
The GlovePIE + PPJoy combo is far more confusing, requires windows to be put in test mode, but offers much more customization. I did a tutorial several years ago but its been awhile since I updated it. All the info still holds true for windows 10 however.
http://bhemuhelp.co.nf/tutorials/WiiWindows.html
Do note if you plan on using the IR as mouse movement then games that use direct-x mouse will not work the way you want them to. I said something about that here.
Option 2: If you have a bluetooth dongle and don't want a DolphinBar, and you simply just want the wiimote detected as a controller, then the driver by Julian Löhr is probably the best and easiest route:
https://www.julianloehr.de/educational-work/hid-wiimote/
Option 3: If you want something more advanced then GlovePIE and PPJoy can be had here:
https://www.mediafire.com/folder/133maxr70sw5o/GlovePie_%2B_PPJoy
The GlovePIE + PPJoy combo is far more confusing, requires windows to be put in test mode, but offers much more customization. I did a tutorial several years ago but its been awhile since I updated it. All the info still holds true for windows 10 however.
http://bhemuhelp.co.nf/tutorials/WiiWindows.html
Do note if you plan on using the IR as mouse movement then games that use direct-x mouse will not work the way you want them to. I said something about that here.