Sure so lets start with what you want the command to do? For example if you want it to print a message to the server (useless but example) you would do like this
PHP Code:
public void OnAllPluginsLoaded() {
PrintToServer("YAY WE ARE LOADED!");
}
If you give me an idea of what you want loaded once the plugins are loaded I can code to something specific for you
Feel Free to PM me about any questions, I'll do my best to help