Skype via WiFi only

[Guest wafu]

Hi guys, got the M600 and I love it, but I want to use Skype on both my WLAN at work and at home. I can browse via WiFi fine, but can't see a way to force skype to use wireless! Searched the forum and can't find anyony else with this problem so it's obviously do-able, just being a muppet.

Any ideas what i'm doing wrong?

Kermit