Okay, now I’ve got the Nokia 6260 Working…
One thing I was having problems doing was using the Nokia 6260 to receive MMS messages. I had it sending MMSes, receiving and sending text messages, but I must have fat-fingered the settings one or two too many times because despite having them right, I was unable to receive any MMSes to my Nokia 6260.
Stev0 suggested I perform a factory reset on the device, which means you dial *#7370#. This erases all the settings and resets to factory default. Didn’t change my time/date format from US back to European, but everything else was gone, at least that which I didn’t store on my MMC.
After doing that and re-entering the settings without fat-fingering, I was able to receive MMS messages on my phone. All is well once again. I suppose a side-effect of this is that I now know Cingular’s GPRS and MMS settings by heart. 
Meanwhile, here are a couple of pictures I snapped today of Jaden, who’s almost 5 now.
