1.  To verify your HP Voice Messenger’s text message settings, select Start > Settings > Connections > GPRS

2.  Since AT&T is my wireless carrier, I see “4 AT&T MMS” in the list, but what you see here may be different based on who your carrier is.  If there is no MMS option here, you may need to select “New” and set up the MMS settings for your wireless carrier.

3.  You could also use the HP IPAQ DataConnect application to see if it will configure the Voice Messenger to handle SMS and MMS messaging properly:  Select Start > Applications > Accessories > HP IPAQ DataConnect