Limiting table rows viewed in CCK Table Field
You need to focus on node template.
Override or create a tpl of your content type e.g. node-type.tpl.php
User $node object to access all your cck fields.

Also care about $teaser and $page flags to get the state of your node.  

If $teaser is true then render 5 items from $node object. If $page is true then render all your items.