I am writing an implementation of ping for Windows XP/Server 2003 and newer. It utilizes the Icmp* functions in iphlpapi, supports IPv4 and IPv6, and adds more options than available in the current ReactOS ping.
Code is currently available here. It still needs cleaning up and localization support, and I would like to get the -S option in. I will create a patch when I am able to build against ReactOS.