It's not easy to find out what version you've currently got installed - as I wrote in the 'some hardware questions' thread (or whatever it was called) it's not always possible to determine the version exactly, as far as I can tell. But if you've never run the SGX driver updater you can be pretty confident you've still got the original default, since I think it's still the same all the way up to 1.60.
I wouldn't suggest you need to update your driver. As far as I can tell it's mainly needed for Mupen and Reicast, and you'd be lucky to get much out of those on a CC.