[PvK]

Ok, I'll give it a try tonight when I get home.

It's a Photoshop plugin (actually, a series of products) by LizardTech called Genuine Fractals (or PrintPro).

It uses a fractal algorithm to extrapolate what an image should look like when enlarged. In some cases the results are quite amazing. Other times less so. I think it would do very well for most maps.

I've used it to create larger Versions of very small sprites and thumbnails with good success.

It's main intended application though is for very large image files, such as for large high-quality prints and posters and so on, where it offers a very high-fidelity yet compressed format which is easily scalable to any size.

PvK