From: "Lindyhop"

When I select ICM does that refer to the
Epson printer profile, i.e. EE163_1? (couldn't find out anything about
this on the Epson website).

The ICM flow means there's a .icm file that describes how to translate the
numbers in the image file into numbers (colors) that will appear on the print,
or at least as close as is possible since the printer will always have fewer
colors than the screen (ie, smaller gamut) and lower brightness.

Many of the good Epson Photo printers give you the ICM file for each paper
type, which allows you to 'soft-proof' in Photoshop by dumbing down the monitor
view to (hopefully) show the reduced gamut and brightness of the print. If you
have Photoshop V6 or later I can tell you how to do this.

The printer you have has bundled all these profiles into one ICM file (your
EE163_1.icm or .icc) so you can't soft proof them separately. What happens is
that when you select the paper type to match what you're printing on the Epson
driver will pick the right ICM file for that paper.

This works pretty well if your monitor is well calibrated and if the colors are
in gamut, and works poorly if the monitor is not properly calibrated.

Here's some background if you're interested in CM basics ...
http://www.creativepro.com/story/feature/13605.html

Bill