My first screencast, took about 1 day plus of fiddling and trying out different software.
1. In the end i used wink for the screen capture and annotation

http://www.debugmode.com/wink/

2. Camstudio use to capture the output from the swf

http://camstudio.org/

3. Audicity for trimming and fade out of MP3

http://audacity.sourceforge.net/

4. Virtualdub for encoding and putting the mp3 together

http://www.virtualdub.org/

Hope everyone enjoys it, though the upload quality is really bad.

Some links on using vimperator as well
1. http://www.linux.com/feature/114419
2. http://en.wikipedia.org/wiki/Vimperator