video editing

[sjef]

I'm new to video editing and am using video studio Pro X3, everytime I edit some video or want to use a clip. The trimmed video always flashes the first frame at the start and finish of the trimmed clip. Also when I add a subtitle or text in the time line, that first frame flashes by at the beginning and end of of the text. This is very annoying and doesn't look very good in the project. How can I remove this first frame and how do I prevent it in the first place?????
Thanks ,

[Black Lab]

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http://forum.corel.com/EN/viewtopic.php?f=1&t=8959