As I'm scouring comp.unix.solaris for tips, tricks and code snippets, I'm realizing a few things. It seems that the values reported for memory and cpu usage are not (necessarily) accurate or simply use a calculation you wouldn't expect. You can look at "top -n 1" vs "swap -s" to see one example of what I mean.
Also, I haven't determined why top shows fewer processes than I can see under/proc. Currently (running as root), for example, top says I have 103 processes, but there are 108 under/proc. I'm showing idle processes, too, so that's not it.
Well, anyway, I've got the load average part done for Solaris. That's something, I guess.