How to call phones, SMS using SIM card inside my laptop

Hello All,

I have Dell Inspiron 1525 laptop that runs Windows Vista. It has a slot to insert GSM SIM card. I heard from my friends that it is there to let users utilize GPRS or 3G that may be activated on the cell phone connection. However instinctively I feel that I should be able to use my computer as a full featured phone that uses the cell phone connection through the SIM card. However, I could not find any clear information about how to do it. I have three questions below -
1. How to use it to connect to internet? GPRS is enabled on my cell phone connection and can access internet using my phone, but could not figure out steps to instruct computer to actually use the SIM to connect to internet.
2. How to use it to call external telephones? I am not expecting VOIP through GPRS, 3G using providers like skype that would work if question 1 is answered. I am asking about how to call using free or paid minutes as part of my cell phone connection.
3. How to use it to SMS to external telephones.

Any help is highly appreciated. Thanks in advance.

Thanks,
Shashi

Usually the SIM card slots that come with laptop's is specifically for 3G services from particular service provider. So, there is no way you will be able to use the slot to insert a SIM card to make it as a phone.
1. If you want use the GPRS connection of your phone with your Dell laptop, then you need to install the phone software(if available) in the computer and connect the phone to it. For example Nokia phone has OVI Suite which will help you to configure any computer to use the phone's GPRS connection.
2. NA
3. To send SMS to other phones from your computer, you should have the phone software installed (depends on the model).