Download NetBeans IDE 5.5 from http://webserver.netbeans.org and install it.
After installation, launch the NetBeans IDE 5.5.
Download the latest plug-in.
Extract the org-netbeans-modules-j2ee-sun-ws7.nbm file.
Select Update Center of NetBeans, from the Tools menu.
Select Install Manually Downloaded Modules (.nbm Files) and click Next.
Add the downloaded .nbm files and click Next.
Select Web Server and click Next.
Select the Include option and click Yes to install the plug-in.
The Web Server 7.0 plug-in is installed in the IDE.