Actually in the help file is an 11 stage step by step guide to Antispam (with a couple of small but obvious errors)...
Key points are to make sure you collect your antispam data from clean forums (ie ones that nobody spams on, this can be a totally new list of forums and can even be one that has forums so secure you could never post on them. The point is you want your 'answer' data to be clean clean clean. Also only use forums in the language you are working in) ....
Remember that the antispam database is stored in RAM, so if you only have a 2gb machine dont try using a 2gb database!
Once you have your database of 'answers' you make profiles on forums, has to be forums I believe, then turn on 'posting thematic replies' in antispam. Setup your post profile as per the help file (its in PProgram setings - Antispam System, and more info in Methods of Promotion a web project - Antispam) and start ...
the quality of what you get out will depends on your antispam database and ensuring your list of forums is high quality.