Fotodiox adapter for old school olympus lens?

I have an Olympus OM-SYSTEM S Zuiko Auto Zoom 100~200mm lens that used to belong to an old film Olympus camera, circa 1980's, and I'm looking at getting either a Nikon D3100 or Sony Alpha Nex-3. If I purchased a Fotodiox adapter, would I be able to use the lens on either of these cameras?

Here is a link that should help you.

http://leitax.com/OlympusOM-lens-for-Nikon-cameras.html

Of course you need to know that only D7000 or better Nikon dSLR's can meter through these old lenses.

From the website.

-The Nikon cameras will show a focus confirmation light in the viewfinder.
-The professional Nikon cameras (D200 and up), and FujiFilm S5Pro, will meter in A and M modes (stop-down).
-Users of non professional Nikon cameras (D40, D60, D80, D90, etc) can select Manual mode and check the histogram of a test shot to meter accurately.

You'll get a marginally better fit with the NEX -3, but neither is much to write home about and you'll still lose little things like AF and most of your exposure modes (you'll lose all of them on the Nikon).

BTW you've just told me to turn left-right. Sony NEX are CSC/EVIL cameras, Sony Alpha are DSLR or SLT - completely different animals.