I did the registry hack for the right and left softkey, but want my right softkey to be contacts again. What is the proper registry hack to open up contacts? I have searched for hours on this forum and others. Please help!

I just did this last night
HKCU\Software\Microsoft\Today\keys\112

change open to ":MSCALENDAR"
Change default to "Calendar" (or whatever you want to name it)
soft reset