Wups! Forgot to mention:

Matt, about the missing Alt-C link to Charon: try editing HOTKEY.DAT
and looking for the Alt-C line, and changing it to read

Alt-C A 46 2344 A 67 2355 *

The meaning of all this (and a more general discussion of how to
change hotkeys) is at

http://www.projectpluto.com/hotkeys.htm

However, you may wish to just wait a day or two, when it will be
possible to reset hotkeys from within Guide. A clip from the text
describing the next update:

----------- Clip from Web site ------------
(?? Mar 2002) Ability to reset hotkeys:
It has long been possible for sufficiently devoted people to reset
the hotkeys in Guide by editing a text file (click here for
details). This is user-abusive enough that I doubt many people
have done it.

In the current version, there is a new "Choose Hotkey" button in
the Settings... Toolbar dialog. By default, it is grayed out.
Click on a function in the list in that dialog, and the button
shows the hotkey currently associated with that function (or a
non-grayed-out "Choose Hotkey" if none is associated with it.)
Click on the button, and Guide brings up a list of possible
hotkeys (and their current functions). Choose one of those
hotkeys, and Guide will thenceforth perform that action when that
hotkey is pressed.
----------- Clip from Web site ------------

About the odd A2.0 star colors: this is quite odd... do they
return to white if the "Color Stars" option is not checked in the
Star Display dialog? While the poor photometry in A2.0 leads to
odd colors (bluer-than-blue and redder-than-red stars), they should
at least show up in "normal" spectral colors.

Switching the video mode may help. Some people have reported
weird cases where, in 256-color modes, Windows couldn't find a
"good" color and chose the nearest (sometimes not too near)
approximation. I've also heard of such things happening in 16-bit
color modes, which makes no sense to me at all.

-- Bill