|This can be done but really is not worth the time and and can only really be done if the other laptops are connected to your with a cable but is very hard to set up to work. Do you not have wireless?|
You can always get a second router connect that to the Main one and set up the second as a bridge this allows people to connect to that one and use the same internet connection.
This is what i have done at home.
Thanks let me know if this helps.