Arright, here's what I'm trying to do. I want to dig up currently active IP addresses on my subnet, and my present strategy is to ping every address until I find active ones, then ping them more often to verify their status. Next, I want to find the names of the computers associated with those addresses, and here's where I'm stuck. Is there any program or utility that I can use to find the names associated with these addresses?
Well, ya don't say whether you're pinging Unix or WIndows machines, whether your want to find their DNS names or something else like SMB or NIS. For DNS, just type "host <IP address>". For windows network names, use "nbtstat <IP address>" (requires nbtstat 
Dunno about NIS, it's been a while since I've done solaris.