Hi Marsbug (long time no see). :)

Unfortunately, when I copied and searched, the file/site was not available.

Anyways, yes, YES. Something tells me that those early organics were locked into those clumps of ice, 'specifically' those that we call comets. Comets are so close to the edge of our solar system that it seems logical. Plainly speaking, comets were plentyful during the early years of our system's formation (obviously, some came our way).

There's much that we don't know about interstellar space and it's relationship to our sun/solar system, especially during those early years of our system's formation.

I know. I've been hinting on that idea for years here which is why I'm such a big fan of the NASA missions that deal with and wish to research those outer limits of our solar system (New Horizons).

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Planet formation.

<a href="http://planetquest.jpl.nasa.gov/>Planetquest.jpl

I'll keep trying to get that article.