I guess it would depend on the version you have, I have CS3 Extended (the newest version) but there should be a filters menu, and under that there will be a sharpen submenu. Just play with the stuff in there, and it should (might!) help out. Don't overdo it though, too much sharpening can ruin a perfectly good image.
And yes, considering those are hand held shots, they are excellent. Does your setup include vibration reduction lens of any sort?