An application to ‘browse’ windows services and with a little bit more ‘friendly’ appearance is Service Controller XP.

IIS Admin Service allows administration of Internet Information Services (IIS). If this service is not running, you will not be able to run Web, FTP, NNTP, or SMTP sites, or configure IIS.
World Wide Web Publishing Service (a related service) provides HTTP services for applications on the Windows platform. The service depends on the IIS administration service and kernel TCP/IP support. If this service is turned off the operating system will no longer be able to serve act as a Web server.