Pinger is a simple program for locating active hosts over a range of IP addresses. 
It is written in VC++ and full source is provided. Pinger works by using the raw socket functionality provided by winsock 2. Pinger has only been tested on Windows NT 4 to date,
so any feedback on Windows 95/98 performance will be appreciated. Pinger is capable of 
scanning a class C subnet for active hosts, and resolving all of the host names in under 15
seconds on a 28.8 connection