[QUOTE=speedevil;19899405] I need to have a lower stand-over height. I may have to go to 650B size wheels to get one that will fit both of us well. I can lace new rims to the existing hubs, which my be the best bet for us and a decent frame. That would lower the stand-over by about an inch/QUOTE]
Generally people use bigger tires on 650B conversions so that the effective height doesn't change. I'd be very hesitant about using 650Bs to lower the height of the bike like that...not sure what it would do to the handling, but you'd need to be really careful about hitting a pedal in turns.