Question on Screencapping

I didn't see this problem pop up in any of the other questions about screencapping . . . unless I'm blind . . . but I was having a problem with the whole black screen coming up instead of a picture. I followed one of the comments on another screencapping question to get past that problem.

So now a picture comes up . . . but whenever I save a screencap, the other screencap I saved beforehand automatically transforms into the new screencap. Instead of having two different pictures, I have two of the same. Another problem I have is when I try to crop my pictures in Photoshop or MSPaint, it will just make the canvas smaller and the WMP tool bar is always in the picture, no matter what I do. If I try to move the picture around, the tool bar will just move around instead and cover the picture.

I'm just . . . really lost. And here, I thought screencapping would be easy.

EDIT: I think a few pictures will help explain my problem, although those aren't saving too well either.

kyosuke2-Now the pictures are coming up as black. I don't know why . . . Anyway, those two pictures were different when I put them up in Photoshop, but when I saved a new picture, the other picture became the new picture. And now they're both black.

Argh. It's pointless putting up the other pictures now.