There is a thread in the gold forums tutorials explaining how to use the template (attached to the thread) to create a custom query. You could tell wordpress just to display six posts on the front page and then modify the template to the query you want (something like 'cat=33') and it should do the job for you.
You could also look for a plugin that could do the job. Experiment, experiment and play around. That is the best way to learn Atahualpa and Wordpress.
Also, create a test site that you can mess up at will. This is where to play and test and screw up without the danger of taking the real site down.
One other thing - BACKUP YOUR DATABASE before doing anything major!!! That way if you mess uup you can recover it...oh and while you are playing with your test site, back it up and then recover it so you know how tom do it (check out the 'wp-dbmanager' plugin)