I have heard that with this tool
Avisynth
you should be able to achive the following editing operations on a movie-clip

Add a slowmotion area where you decire

Add a repeat area, and let thoose frames repeat 2-89 times until finally release..and play normal again

since i complete suck in the art to understand manuals, do you perhaps allready know how to do this? if so tell me how to klick please

Or better, if you know any other free editing programs that can do it, cause someone said that you need to "script" in Avisynth to do it..which i think im gonna find to complicated?
is this overall hard operation to learn if i would use "Vegas" for instance?

thanks in advance