On Cingular's web site they show 2 plans for the regular user (not Corporate). They have 'BlackBerry Personal' which says to be $34.99 with unlimited data. Then they have 'BlackBerry Tethered' which is $79.99 with unlimtied data. It doesn't say exactly what type of data you get (sms, mms, email, internet, etc..). Also, if the tethered plan is for accessiing the internet from your laptop with the BB tethered, then they are stupid because T-Mo lets you do that for no additional charge.