DebW, thanks! I don't use all the gears--mostly 1-6. Since I live in really hilly area, I'd like to be able to do more with this bike. If I've calculated it right, I went by my 26" mtb gearing for this area and it seems as though the 22 T sprocket would be about equal to my middle front chain ring/middle rear cassette gearing on my mtb. I went to Sheldon Brown's website and used his calculator for internal hub gearing.

Also went to mtbr.com and read what the mtb'ers are using for hills and the most popular is 22T.

So for about $14 bucks or so, I can change out the rear sprocket.