II hope someone can help me!  I am trying to make a movie by combining small clips and trimming them.  My problem is my clips are there and then they are not and have the yield looking symbol with '!.  My guess is I am not getting them saved to use??  I used  Sony Handycam DCR-SR47 video. I have saved them to my desktop then added the clips from there.  I just downloaded the Movie Maker this week.  The program freezes up too.  I just stopped typing this comment and wanted to try something else..didn't work but in the process it froze up so closed the program.  I restored and all my clips are back....but for how long!  I don't understand what is happening. Any help?  

Thanks!  Kindergarten Teacher feeling helpless!