Smart RSS help!

I’m new to wordpress. Just installed it a little over a week ago. I’m having issues with the SmartRSS plugin. I’m feeding my site RSS Feeds from Yahoo. But I would like to have a limit on what’s to be displayed. I’m not understanding this part of the plugin.

Related Articles Display 

- to display the related articles add this code in your single.php page from your template directory:

< ?php smartrss_related_posts(5, 10, '<li><b style="font-size:14px;">', '</b>', '', '', false, false); ?> 

Function parameters: smartrss_related_posts(limit, len, before_title, after_title , before_post, after_post , show_pass_post, show_limit)
- limit = the related posts limit to be displayed
- len = if show_limitis set then it will limit the post size to $len words
- before_title = html code to add before post title
-after_title = html code to add after post title
-before_post = html code to add before post
-after_post =html code to add after post
-show_past_post = include posts that are password protected
-show_limit = limit the post text to $len words

Also, it’s not going into the category where it’s supposed to be and it’s showing on the main page. Actually, that’s fine. But I would like to limit the amount of news posting and have the feeds go into the right category.

Gosh, I hope this makes sense. Thanks for reading and responding.