Wifi connection issues

I recently purchased the Dell XPS 14z and it has been working fine, however when I take it out to work (where there's no wifi connections) a red 'x' now appears on the wifi icon in the task tray. Usually it just shows an orange star and is essentially 'pending' connections.

When I try and use my BlackBerry Bold 9900 to connect using the mobile internet it says that it can't connect as the wifi radio may be off? This hasn't happened before and I've tried everything to troubleshoot it with no luck.

Thanks

Are there no wireless router ssid's at work does it say no connections available when you click on wireless icon?

Do you get available wireless connections at home still?