More tag in news like blogs??

Hello,
The system that the news module has (with the number of characters displayed) to cut off the news thread is not what i want.
Does someone has any idea to help me change the news module so that:
The new's thread cut-off does not depend on the characters, but on a "more" tag that the user inserts, as is used in blogs!
In the blogs, there is a more tag inserted in the post, and at that position the thread is cut off and there is displayed the "more" link.

Sorry for my bad english:erm:

If someone can help, i would be gratefull!