Widgets not behaving

Hi All,

I am getting the following error on my widgets.

WHMCS Integration: Couldn't resolve host 'www.whms.service2me.co.uk'

I have installed WHMCS on one server at.
http://www.whmcs.service2me.co.uk

My MU install is on a second server

http://www.sites2me.co.uk

****** Oops. I see the problem. I have resolved the problem. Had a Homer Simpson Moment and did not have the correct URL in the Plugin.********

Not sure where I have gone wrong.

Thanks

Rob