ProcNetMonitor, the tool for monitoring process network ports is supported for Windows 7 now.  Newer version comes with enhanced user interface along with minor bug fixes.

In short, ProcNetMonitor makes it easy to quickly analyze network activity of all running processes. It has advanced color based auto analysis system to make it easy to distinguish network oriented processes from others with just one glance at the list. Also its ‘Port Finder’ feature allows for fast port lookup among running processes.

For more information and to download the latest version, please visit the ProcNetMonitor page.