Images look over sharpened in Miller's Remote Suite PLUS

I'm ordering some prints from Miller's, using their Remote Suite Plus software. When I load the images, the hair looks way over sharpened. However, if I view the image in LR4 it does not look over sharpened. I do have LR sharpen (standard amount) for glossy paper on these exports, so I checked the exported images in windows picture viewer, at 1:1... the don't look over sharpened there. Is this an issue? Or maybe just something funky about the way Remote Suite PLUS displays the images? Any advice would be appreciated.

Not sure how well this will show up, but here's what I'm looking at. Windows Picture Viewer at 1:1 (left), LR4 at 1:1 (right) and Remote Suite Plus (middle).... Is this something I should be worried about showing up in the print? Or is it just some artifact from the RS+ program?

HTTP response: 404 | MIME changed to 'image/png' | Byte size: ZERO

Hmm, it looks like compression artififacts in the RS+ software. Make sure you tell them to turn off auto-correction, and I'd do a smaller test print of a cropped part of the image before going for a large print.

Thanks, Tony! That's a great idea.