Currently troubleshooting the website - making sure the links to the response messages and emails are all acceptable and make sense. Spent quite a bit of time to realise it was my site's fault that new users were being pointed to the wrong address to login. Then there was the issue of - do you create new userids for anyone who puts in a donation? If so, how do we tie the address they have entered in ubercart to that of their profile? After some careful searching I found reference to the UC_addresses module. This was the answer to all my queries. But just as I started really getting things working - the RealEx site stops working properly. So now, I'm waiting for input from the other side before I continue.
Another not so important issue was adjusting permissions so that the site administrators could access all the relevant menu items for viewing orders, products, and reports. Its funny how you forget the simplest of things when you haven't done something for an age!
I hope I get this donation site up in time for when they need it! Fingers crossed!