[gambatte]

When I upgraded to WM6, i noticed the ringer volume low as well. When I looked at the InitVol in the registry, it was "2". I set this to "4". When you press the volume button on the side of the 6700, you should get a display with a PPC (device) volume slider on the left and a phone volume slider on the right. The phone volume slider on the right increased the ringer volume so much that I had to decrease the device volume on the left a couple of notches. Working the two sliders should get you an acceptable ringer volume.

Prior to the registry hack, everytime I tried to increase the right slider, it would fall back to the previous setting. So far I have only used .wma ringtones. Just my experiences.

Edit: Did you try to go higher than "5". I think the hack was for WM5 where not much increase was noticed after "5".