Qubee got 4 kinda modem,2 of them are little,USB.Another 2 are big,connected with LAN.
BLION got a USB AFAIK.
BTCL needs an ADSL modem which you need to plugin with your PC and your telephone,most prolly.
I know about Qubee that ... every modem has a "MAC" no. and once a modem is sold,the modem[MAC] is bundled with an ID [which has a pass they provide].So you can't log in with another ID using that modem.So if you do buy a Qubee modem from another person,you have to get all the account info.Later you can change the mobile no and the e-mail ID.
And ADSL modems aren't that complicated I think.
Dunno anything about BLION :S
Hope this helps.
BTW,what's your intention?
Wi-fi?

You mean WiMax?
