Okay,

I tested on my network:

I pinged my 192.168.0.1 address, got a response
I pinged my 192.168.0.2 address, got a response
I pinged my 192.168.0.255 address, got the request timed out msg.

This is all on the same hub, and both on the 255.255.255.0 subnet

what am i missing?