I have a quite new portable computer. Now I want to buy a mobile-telephone and connect that to the computer, so I can sit whereever I want and surf on internet.

Can I buy whatever mobiletelephone I want or do I have to buy some special that are special prepared for that ?

One guy in a shop for telephones told me I need "infra-red" on my computer to recieve the signals from the phone, because they didnt make the phones with modems anymore. Is this right ?

If yes: I think I dont have infra-red on my computer. Do somebody have to open up my computer and install infra-red, or can I buy a plug-in and plug it in myself ?

Sergio