You could recreate most of the functionality, I'm sure, but
the MS-Office and MS-Exchange integration would be almost
impossible, even with the Exchange functions we have in CF8.
You're better off looking for a third-party canned
collaboration app than trying to replicate SPS, from scratch, with
ColdFusion. That's a mountain I wouldn't want to climb (or a hole I
wouldn't want to dig, which is probably the better analogy).