Alternate Card Art?

Hello,
I'm new to this site and the software. I've downloaded the MTG game, patched with all the new cards. When I look in the "CardArtNew" folder I notice that some images seem to have alternates, such as "0004.JPG" and "0004A.JPG". Most of these "alternates" use capital letters in their names, though a few use lower case.
My question is, can I choose which version of the art I'd like to have used with a specific card? The first version of each image (without any letters) seems to be the default when I look in the Deck builder. Does the program rotate the use of images or what? Why are these "alternate" images in there and how might I make use of them if I have a card art preference?
Sorry if this question has been asked before. (I'm guessing it has.) But if someone could even point me to an appropriate thread I'd be grateful.
Thanks!
I'm new to this site and the software. I've downloaded the MTG game, patched with all the new cards. When I look in the "CardArtNew" folder I notice that some images seem to have alternates, such as "0004.JPG" and "0004A.JPG". Most of these "alternates" use capital letters in their names, though a few use lower case.
My question is, can I choose which version of the art I'd like to have used with a specific card? The first version of each image (without any letters) seems to be the default when I look in the Deck builder. Does the program rotate the use of images or what? Why are these "alternate" images in there and how might I make use of them if I have a card art preference?
Sorry if this question has been asked before. (I'm guessing it has.) But if someone could even point me to an appropriate thread I'd be grateful.
Thanks!