Data Capture Form for Website

Hi, My client has a website which he wants to allow visitors to register there email address and name. Its a simple data capture form, and requires that once the visitor has submitted their details that information is sent to his email address. The website currently has a registration form on it, but is out of date and we don;t want to use the company who provided it. The site has been built in HTML/ASP. The website already has a splash page to thank visitors once they have registered. Thats it for now, but as the site develops will probably require more help on future projects. Any questions please do let me know. Many thanks, Alex