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@muleboy
ISO and JIS correspond to the size of the sqare taper in the cranks and the bottom bracket needs to match. Chain rings have nothing to do with ISO and JIS.
The BCD (bolt circle diameter) is what you need to be worrying about if you've bought the chainring to fit to your exsisting cranks. The BCD of that chainring is 130, one of the most common these days.
However, I assume that you've bought the whole chainset and not just the chainring. In this case I suggest google'ing (sorry I cant be arsed to do it for you!) to find out whether its JIS or ISO, but im sure someone here will be able to clarify that.
Hope this helps