Hi , I can help you with you project
if we're talking about "moving the website to modern technology" then we are probably talking about ASP.NET MVC and SQL database , we can make the most out of this moving and add BootStrap to make the website mobile-friendly , which enables your website to look better when someone visits it from his Phone , as well as , AJAX , which can transmit the data and update the website content immediately (without the user refresh the page) , these two features are important
I am available if you need to discuss this project any further