i'm really new to ubuntu and really excited about it. i've bought a lenovo b5400 and installed 12.04 version of ubuntu. checked several forums and could not find the answer for:
how to activate my wifi card?
all answers will be appreciated,
Update1: running lspci | grep Network command got:
horim@horim:~$ lspci | grep Network 04:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device b723