Eh to heck with it I may as well make a triple-post!
"Clean" MI1 box art (5.08 MB): mi1.png
"Clean" MI2 box art (4.40 MB): mi2.png
Both losslessly compressed in the PNG format. More-or-less 300dpi. Clean meaning they're basically the complete box arts (no "system requirements" rubbish or anything).