Module development and code questions

I needed a custom module for my website. I experimented with CCK module, but the whole body goes to front page as teaser. Then I experimented with Flexinode and I marked a field to be used as teaser and only one line from that field goes as a teaser and the rest is ignored.

Can any one help me to make one of these modules work with a teaser ( 5-6 lines ideally) or suggest another module.

BTW am on Drupal 4.7 beta 6
Thanks in advance

Thank you
Regards
Onesimpleman

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