Stsadm Technical Reference for SharePoint Server 2007 & Windows SharePoint Services 3.0

Now that's cool, an simple and sweet application in silverlight for all your STSADM commands! No more seraching the black screen for the correct command. 

For MOSS 2007

http://technet.microsoft.com/en-us/office/sharepointserver/cc948709.aspx

For WSS 3.0

http://technet.microsoft.com/en-us/windowsserver/sharepoint/dd418924.aspx