I tried putting them in the MP_ROOT with the M4V names but it still didn't work

I came up with an error message
"Cannot copy M4V20001: Cannot find the specified file. Make sure you specify the correct path and file name"

And then all the folders disappear and so does the psp off my computer

:)YOU CAN SETUP A NEW VIDEO PLAYER TO YOUR PSP,HEHE.....ds-zero

Can you do that?

On the converter im using (total video converter) I've got the little PSP mp4 format checked.
i've got version 3.80, and i'm putting them in the video folder

Ok here's my problem.

I had some videos on my psp, but then i took the videos off. When i tried to put the very same videos back on again the psp screen reads "please wait", the psp disconnects itself from my PC and when i look at the videos section of the psp it says that the file is corrupt. The videos are all mp4 format, and my memory card is a sony 1G magicgate card.

I've searched all over the internet for a solution and cant seem to find one.
Any help would be very appreciated

I need a cheap card to run COD 2. Good enough to run smoothly but stil cheap.

Any Ideas?