About the add or remove option

When I intialty downloaded the 32bit xp version it prompted me to do a test scan and created a message about botester producing an error which I culd either kill or allow to run, was that just a saftey test ? Anyways about the main question I was getting at in the topic title, where it says add/remove apart from the memory gardian application is there anything elese which should be added there ?

The memory gardian had the suffix kill not allow in the add or remove list.Does the memory gardian supposed to say allow in the add/remove list ? Oh and is it best to define memory gardian as a trusted application in the firewall or doesnt it conflict with other scanners anyways ?