Ok, step 1. Find a bot script you like. Determine what you need from the bot. If you don't need anything other than this script, you can just install another copy of mIRC somewhere and run that with the script on it and you'll be set. If you need something else from it (channel protection, trivia, etc), then you need to find one you like from a scripting site like mircscripts.org.
Step 2, install the bot and load it up. Change the bot's nicks to whatever you want them to be (obviously not the same nicks as yours).
Step 3, add that script into the bot in a new file (Alt-R > File > New).
Step 4, connect the bot to the channel.
Step 5, connect you to the channel and it should work.
Step 6, if you want the bot to be auto-op'd , set it up with /chanserv (if available), or with yours and the other ops' auto-op settings.
Since you aren't saying why you want this script, I'll just point this out in case it matters... Anyone who sees the bot's nick in front of yours will know the bot said it. Not really sure why you want it there, so that may not matter... just mentioning it.
