Cyberlink Power Director Pro 2.5

Does anyone using this site have this particular software program for editing & burning video movies onto a DVD disc. The program being Cyberlink Power Director Pro., version 2.5
I have had this program for nearly a month now, & am having trouble sorting out the trim mode (editing).
Would really appreciate any help I can get, as I am a newbie at this, & the help files are definately not helping me.
Thanks,
P.S. Maybe most software programs are edited in the same way???
Hoping to get some answers,
snoluc:confused: :confused: