Well, at least it's concise.
I'm going to take a guess here that the thread title is his wifi's SSID.
Dear Aleš_1, you are a new member of these forums, so we will give you a bit of slack. I have over 15 years Linux experience, but just saying "WiFi" in a post is not particularly useful to help you. Many Linux distributions (you don't mention which yours is) don't directly support proprietary WiFi drivers and firmware. They are available, and I have NEVER been unable to get my Linux WiFi working (I only use Linux on my systems). So, please post this information:
After that, we can make appropriate recommendations. Thanks.
@Dani - if her network tools show an SSID, then the driver and firmware are working. I don't think that is her problem, at least in my experience. It probably doesn't show any connection at all, but obviously we need more information.
P.S. I also post help on the LinuxForums.org web site, under the same pseudonym of Rubberman.