Yes! Thanks, Jerrylouise. I ended up renaming the "kindleminds" directory to "km", then used the control panel to point the new domain to that directory instead of "kindleminds". Then I created an empty "kindleminds" directory and added index.php and .htaccess to it:
index.php:
<?php
$url = $_SERVER['REQUEST_URI'];
$url = preg_replace('#/?kindleminds#i', '', $url);
Header("HTTP/1.1 301 Moved Permanently");
Header("Location: http://www.kindleminds.net" . $url);
.htaccess:
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteRule ^(.*)$ index.php [PT,L]
</IfModule>
Seems to be doing the trick. Now http://www.charles-reace.com/kindleminds/about takes you to http://www.kindleminds.net/about. 🙂