I found a really neat tool on BigAdmin: Sun Device Detection Tool. Okay, I got pushed there by a reply by John Brewer in a opensolaris-rfe thread: Re: SATA support. This BigAdmin article has a Java-based tool to browse your system to tell you what hardware it has and whether or not Solaris 10 11/06 has a driver to support each item.

So the hardest system I have is my Fujitsu P7010D. And here is what the tool reported:

Now I don't care about the modem - I haven't in years. As for the wifi chip, I know it is supported in Nevada and I think it should work in Solaris 10.