So the diagram of my network looks like this
http://www.gliffy.com/go/publish/3766098/
The network works fine for now, but my mom's laptop has a weird IP address. The settings of D-Link router is absolutely default. (SSID - default. Pass - none). When I changed SSID all the clients got a weird IP address. I wasn't able to find anyone else on LAN network, but now I can see everyone. How could I configure it and turn on the DHCP client?