Do these represent conformational isomers of butane? (Image provided)?

Original: http://i12.photobucket.com/albums/a209/T_O_S/60.jpg?t=1292384829

Possible isomer: http://i12.photobucket.com/albums/a209/T_O_S/59-1.jpg?t=1292384801

I thought in conformations, only the wedges switch place? So I'm unsure if they're isomers or not.
 
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