I had the usual problems dealing mail() and smtp setup. It can be a bit of a nightmare but anyone who has setup comment notification will already know that.
Setting up cforms means the same problems but that is not really the fault of the plugin. And I confess that I took all the compliments about great support with a grain of salt but it really is true. Not only does cforms have the best interface of any WordPress plugin bar none, and easily as good as any commercial software, but Oliver Seidel really makes an effort and goes way beyond the call of duty to make sure you can get it up and working.
Many thanks Oliver and people can go and see two forms in action on our site if they need to see the proof.