Thanks for the reply. I ended up doing something similar with the Plus version I bought for my old computer since it requires a second dock for the system tray anyway. But it was annoying (to me) to have a separate dock for that. I like the simplicity of having everything all in one place, in plain sight, and not looking weird (yes, I'm a touch anal-retentive). Unfortunately, at least with the Plus version's system tray it didn't work anyway, and from what I've read a lot of people are still having that trouble with Vista.
I haven't had time to test or confirm this, but the system tray docklet appears to be working now, and I'm speculating that it's because I've been leaving the computer running instead of putting it in sleep mode. I've been avoiding putting it into sleep mode because Vista seems to have trouble coming back out of it. My PC vendor has released a BIOS update to fix the problem, so maybe when I get that installed that will fix the docklet problem as well. I'll post my testings when I actually have time to test it. : )
In the meantime, if anyone knows of any alternative system tray docklets, it'd still be worth trying them out too. Thanks!