First, check in your motherboard manual and confirm that you have the ram in the correct slots. Sometimes you alternate, sometimes you don't. I believe it should then auto dual channel. However, there are options for ganged and unganged. Ganged is a single 128 bit channel while unganged is dual 64 bit channels. My board forces unganged, but I think CPU-Z should correctly identify ganged vs. single channel.
As for the second part, see if there is a setting in the BIOS to set speed and voltage by EPP. if not, you will have to go in and manually set the timings, voltage, and speed of the ram. Look online to see which settings to change and then follow your motherboard manual on how to change them.