You can use the Split feature in My Screen Recorder Pro. It is accessible from Tools ] Split File or by clicking on the Split File button in the tool bar. Simply select the portion you want to keep by marking a start and end duration and perform the split.
For distributing, you can use the Generate Executables feature which turns your screen recordings into self-playing files with a built in video player. My Screen Recorder Pro lets you create HTML pages with embedded screen recordings. These pages can be easily put on your website.
Read our article on the various options for distributing screen recordings at this URL:
http://deskshare.com/resources/articles/msrpro_distributingscreenrecordings.aspx
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