I found a sim slot on my notebook,how can i use it?was it posible that i can use it as a modem?

You haven't found a SIM card slot, that slot is meant for an SD memory card. Many computers are coming with integrated card slots so you can store or retrieve data. For example, you might take the memory card out of your digital camera so you can transfer the pictures to the computer.

As for using the computer as a modem, I'm not sue what you want to do, but there is already a dial-up modem supplied in the computer for connection to a regular telephone line. With suitable software, you could receive faxes, for instance, or connect to a dial-up network. Most computers still come with the dial-up modem installed, although most users today connect their computer to a network with Ethernet cables.

The slot is used for camera memory cards such as the SD memory card. No, it cannot be used as a modem. However, there should be a jack just like the jack for your phone on the wall of your house, this is the dial-up modem connection. Simply connect it with a telephone cable to the wall from you laptop.