Website Improvements/Developments

We have designed a webform internally and currently up and running on a subdomain. In addition, we have been able to source for some login scripts with admin features which is also working.

However, we would like a developer to help in the development of this webform. Our aim is to ensure that once the form is submitted, the data is automatically written to the My Sql database as well as emailing to us(probably in pdf format).

We would also like the users to be able to register before they can complete the form, and after form submission admin users should be able to update the users page with their appliation progress.

This is an urgent requirement so we would like it done ASAP, but we are also very limited on budget so we would like the cheapest possible with the best results... Majority of the required code is already available, its just doing the tiny job of joing everything together to get a working functional system.