I have just ordered an HP 5550 with the expansion jacket, card,Ietc with a view to insert my GPRS activated sim card to gain best connectivity - or so I am told. I am a complete novice with this type of system - I just need to access client websites before I meet with them (perhaps whilst in the street outside their building)and send and receive emails throughout the day. I thought I had got this right - but now colleagues are saying all I needed was to upgrade my mobile to bluetooth and forget the xpension jacket etc. Which is best? Any ideas?