The wireless network adapter on Lenovo E145 laptops is not supported out of the box on Debian. Though you can see the PCI device (using lspci), you do not have a wireless interface (as checked with ifconfig -a, for example).
My wireless access point at home is actually a Realtek 2500 wireless card on my server. I use my server as the place to put access policies and as a broker for all traffic (my public IP address is also on it, instead of on the modem in front of it).
