using PSEXEC is good, but I would like to write a BigFix task that can add a user or a group from Active Directory to the local administrators on selected PCs. Of course this can be done using Group Policy or net localgroup administrators domain\user /add, but need other options.
You could also write a vbscript that is downloaded via a fixlet, and then processed. This isn’t much different from the batchfile with “net localgroup” in it though.