Welcome to JavaRanch.
If by "dynamic web project" you mean a web application consisting of
servlets and
JSP pages, then you don't need an IDE. While some IDEs have plugins to develop web applications, those make it harder to get started, IMO, unless you already know what you're doing.
What you do need is a servlet container like
Tomcat. I'd suggest to start with downloading that and getting it up and running.