lots and lots of googling led me to this code:
// custom excerpt ellipses for 2.9+
function custom_excerpt_more($more) {
return ‘…’;
}
add_filter(‘excerpt_more’, ‘custom_excerpt_more’);
/* custom excerpt ellipses for 2.8-
function custom_excerpt_more($excerpt) {
return str_replace(‘[…]’, ‘…’, $excerpt);
}
add_filter(‘wp_trim_excerpt’, ‘custom_excerpt_more’);
*/
which did the trick nicely!