Moving my website to a new server...

I have problems with my website on the new server...

Sending emails in Medium Trust asp .net windows server. Everything work in Full Trust, but cannot convert it. For someone who faced the problem before it shouldn't take longer than 1 hour.

This is how my website should work... (take a look and see how it current throws up an error)

* add product to basket.
* basket page > select shipping option and enter customer email address

when a customer clicks checkout the error shows up

this is what should happen instead...

* email potential order gets set to me
* product code and value are carried onto my other website for payment.

My website is cannabis seeds for sale - if you have an issue with this please dont bid although it is 100% legal to see cannabis seeds!