For the edges -
1.Place a blank layer over the image you are using
2.Use the rounded rectangle tool and draw around the bit of the image you want to keep. (If it all goes a solid colour, like grey, it doesnt matter).
3.Now, double click on the layer of the original image. In "advanced blending", slide fill opacity to 0 percent. Press ok.
4.Click on the layer with the rounded rectangle, and click the "Paths" tab. Then click the " >> " to the right of the word Paths. Click "Make selection".
Make Feather radius be 0, and make sure the anti-aliased box is ticked. Press OK.
5.The rectangle should be selected...go to Edit->Copy merged.
6.Create a new document, press paste, and it should copy the image with rounded corners!
Hope that helped.
Yeah thats cool, did you do that in two seperate layers?
And I think thats the easiest way to upload pics anyways!