Maybe use DUMPSEC from here
http://www.somarsoft.com/somarsoft_main.htm

along with some other UDFs as required/needed.

Without more specific details it's rather difficult to assist you further.

Maybe used in conjuntion with scheduled tasks or remoteexec

http://www.kixtart.org/ubbthreads/showflat.php?Cat=&Number=83206

NET VIEW to get a list of computers in the domain or an ADSI query against a specific OU then maybe ping them to make sure there online, then run remote scripts against them.