Ping

Have a look at the ICS by F. Piette : it contains a TPing component. It's using ICMP.DLL though, which is depreciated by Microsoft, at least it was a couple of years ago as support for this dll 'could dissapear in the near future'.  But looks like ICMP.DLL is holding on : MS's own ping.exe is using it.
Another way is using by using raw socket, but that involves needing Administrator rights on a standard installation.  I made a component once that used raw sockets for a ping, but don't have the source around right now.  If I don't forget it, I'll try to have it around next week or so.

Hope this helps.

schardosin:
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