Maybe someone else can answer your question but you may want to post a few things like your service provider and such. Why do you need to disconnect data? If you get your phone working like you'd like with Data/Voice then you can download Widgetsoid 2.x and make a widget that will let you disable/enable data as you please. If you want the APN settings (sometimes you have to turn the phone on/off wait a while for the APN to "catch" it seems)
PPCGeeks - View Single Post - Linux/Android on CDMA Touch Pro -- Now working on Verizon! And with GPS!
those are the ones for Sprint. This also enables sending of MMS.