Well, these numbers don't seem overly high to me at all. Have you heard of the Glycemic Index? Foods have a rating on this index (GI) and are rated according to how they affect your blood sugar. Low GI is something like below 50, medium is about 50-65 or 70, and above that is high. High makes your blood sugars rise quickly, low has a good steady affect on your sugar levels and so you want to aim for low. Have a good look around on the net and find out as much info as possible, it really is helpful. I think this might help your sugars, if you are not already following it (you'll find that a lot of type 2s here advise to have small amounts of low GI carbs and lots of veg/salad)
As far as I know, if your blood sugar is high then you should try to drink plenty of water - high blood sugars make you dehydrated but also someone mentioned before that it kind of waters down your sugars, though I'm not sure whether that's true (I guess again, a little research on the net would be good).
Exercise is good for your sugars. Exercise obviously uses up energy (i.e. the sugars in your system) and so even gentle exercise will benefit you by lowering your sugars. It's just those using insulin and some meds need to be careful they don't have a hypo (low blood sugar).