Hi Clay,
Thanks for your response, I published the form to a network share and my laptop gave me a connection to ADservice, but when I tried another PC using another account it gave 'Access Denied'. The ADservice is running on a server that has no SharePoint installation, so it's fairly basic, I'm not familar with IIS permissions etc, could you possibly give me a step by step check for looking at the permissions in ADservice?
Also I have noticed when connecting to the ADUserInfo.asmx page, it mentions that 'This web service is using http://tempuri.org/ as its default namespace.' Should this be changed? and if so, how? Not sure if this maybe the cause of the 'access denied' problem.
Thanks again for your help.
Kevin.