can you auto add something to the subject

Recently set up a thriving list with SmartList and the crew is very eager for the list name to be appended to the beginning of every subject for sorting reasons.. I believe I've seen majorDomo do this.. Reasonably simple task, except to do it right I think you'd want to parse the subject to make sure it wasn't a reply with the list name string already in place... Can smart list do something like that, and if so how? thanks! -frz