I use DialCentral on the N810. As HeavyT mentioned previously there is currently a problem with loading Google Contacts on any 3rd party app. On my N810, that includes the Email, Chat, and DialCentral Apps. This problem seems to be affecting the N900's email app also, but I don't know about the other N900 apps. On the previously referenced threads there is a description of the changes Google has made. Hopefully all the apps will be updated and usable soon.... including DialCentral.