Do I need a modem in the laptop?
I used to use the cable access to the local net and internet. Now I gonna buy a new laptop, but all of them have no modems (for example, Toshiba). Should I look for anything else?
Don't worry about having a modem - the question you need to ask yourself is: will you ever need to connect with dial-up? The answer is probably never. As long as you have wireless capability with the laptop, you can go to many local restaraunts, coffee shops, libraries and gas stations to find Wi-Fi and connect without trouble.
The last time I used my laptop modem was in 2003 (using local access numbers on a cross country trip). Since then, it hasn't been a factor. Just make sure you have wireless capability, and you'll be fine.