That information is easy to get...just peep this URL:
Check out
www.netcraft.com for more information (Click on "Whats that site running")
It will show you information about your webserver and even start keeping tabs about your uptime .
Let me just add that the URL above shows nothing that anyone can use OTHER than the information. Hackers are smart, upgrade your packages on your cobalt and get everything up to date.
Otherwise upgrade your sites to a newer box, Cobalt RaQ's are notorious for intrusions. Also, the newer version of the cobalt software has ways to notify you of port scans and hack attempts.
AJ