screen caps?

i know there have been a couple entries on this topic recently but none of them really answered my problem...which is when i use the psp7 screen capture, and hen paste it into psp7, the image cannot be made smaller or bigger and is fixed in a position i cannot move (the position of the DVD player i captured it from)
the prt sc key also those that too.

does anyone know a program (preferably free) that helps me create screen captures?