bes use to have tethering including on At&t (to 5 gigs) not sure if that still exists but unless you are paying for a bes hosted account (additionally $$ per month -> unrelated to carrier) ..switch to BIS save some $$.
Q10! <- Love the 9000!! It's everything I wanted (minus enough ON BOARD memory)!!
<-9700 ---! more memory! small screen&keypad :( ->