If you are not listed in the users extended acl, they will get the trust signer prompt appear, however once they have clicked "trust signer" they should not get it again. this is suposed to prevent people automatically running code from an unknown source (unlike microsoft which just runs it).
you can add yourself to the extended users from the domain address book, by actions edit administration ECL (as long as you have access. however this will only apply to users that are set up after this. you can however use the @refreshecl command to update their local copy (this will however also bring up the trust signer box).
As to the agent not found:
1. Is the agent a hidden agent. ie in the agent list does it have brackets round it. If so you have to include the brackets when you call it. eg @Command([ToolsRunMacro] ; "(hidden agent)".
2. Can you run it youself. If not it is probably the above. If you can then have you created the agent as a 'Shared agent' (thats the little tick box under the agent name) if not the agent is stored on your local machine and not the server.
If it's none of these post again and I'll have another think.
chris