Camera Lens Converter?

I'm currently looking to buy a Olympus OM-2n online, it comes with many lenses and i was wondering if there was anyway to use these lenses on my Nikon D3100?
I have briefly looked into the converter rings and these have confused me more- do they work changing the lens from SLR to DSLR? And can anyone recommend any? Any help is very appreciated!

Added (1). I also have a Pentax ME super with some lenses that i would like to fit to the Nikon. Again any advice would be very much appreciated

If you want the OM for a film camera, then buy it. If you want the OM just to use the lenses on your Nikon, you are wasting your time and money. Converting lenses is the worst possible way to add to your lens collection.

You will also find that it is difficult to convert most other mounts to Nikon, as they use the narrowest lens mount. You can convert a Nikon lens to almost anything else, but very few can convert to Nikon.

I'm not able to locate such an adapter at B&H.

Converters only work by adapting a lens to a camera body with a different mount. They don't make a manual lens into a digital one.

You can try looking for a Pentax K-lens to Nikon body adapter to use your PK-mount lenses on your D3100. You would however lose all automatic functions and the lightmeter. You will literally be left to your own wits.

The same is true with OM lenses if you can find an OM-lens to Nikon body adapter. I don't recommend going this way with both PK and OM lenses. The adapters, if you find one will have an optical element to preserve focusing to infinity but will degrade optical quality a lot defeating the advantages of using such fine old lenses. If you really want to use your old PK lenses digitally, buy an old Pentax dSLR. The cheapest Pentax ist models go for less than $200 nowadays. Around $250 could probably get you a decent secondhand Pentax with Shake Reduction already.

If you really insist on using old lenses with your dSLR, try the Pentax first. If you like it, you can just buy an M42 to PK adapter to use with the PK to Nikon adapter and allow you to use the older and cheaper screwmount lenses.

It's never a good idea to mix one brand of lenses with another brand of camera, at least for those combinations where the lenses are not specifically designed for the camera.

While you may get them to work, they all have issues; either lack of infinity focus, poor optics, etc.

You pay a premium for quality with a DSLR, and the worst thing you can do is to cheap out and put some funky adapter on it with a lens not designed for the camera.