All right !
It is very easy :
le="color: #000000"><?php <script type="text/javascript" src="<{$xoops_url}>/class/xoopseditor/ckeditor/ckeditor.js"></script> <textarea id="summary" name="summary" wrap="virtual" cols="60" rows="40"><{$summary|escape}></textarea> <script type="text/javascript"> CKEDITOR.replace( 'summary' ); </script>
Here, my config file [config.js]
le="color: #000000"><?php CKEDITOR.editorConfig = function( config ) { // Define changes to default configuration here. For example: config.language = 'fr'; config.uiColor = '#888888'; config.height = 550; //config.width = 540; // Toolbar configuration generated automatically by the editor based on config.toolbarGroups. config.toolbar = [ { name: 'document', groups: [ 'mode', 'document', 'doctools' ], items: [ 'Source', '-', 'Save', 'Preview', 'Print' ] }, { name: 'clipboard', groups: [ 'clipboard', 'undo' ], items: [ 'Cut', 'Copy', 'Paste', 'PasteText', 'PasteFromWord', '-', 'Undo', 'Redo' ] }, '/', { name: 'editing', groups: [ 'find', 'selection', 'spellchecker' ], items: ['SelectAll', '-', 'Scayt' ] }, { name: 'insert', items: [ 'Image', 'Flash', 'Table', 'HorizontalRule', 'Smiley' ] }, { name: 'links', items: [ 'Link', 'Unlink', 'Anchor' ] }, '/', { name: 'basicstyles', groups: [ 'basicstyles', 'cleanup' ], items: [ 'Bold', 'Italic', 'Underline', 'Strike', '-', 'RemoveFormat' ] }, { name: 'paragraph', groups: [ 'list', 'indent', 'blocks', 'align', 'bidi' ], items: [ 'NumberedList', 'BulletedList', '-', 'Outdent', 'Indent', '-', 'CreateDiv', '-', 'JustifyLeft', 'JustifyCenter', 'JustifyRight', 'JustifyBlock' ] }, '/', { name: 'styles', items: [ 'Styles', 'Format', 'Font', 'FontSize' ] }, { name: 'colors', items: [ 'TextColor', 'BGColor' ] }, { name: 'tools', items: [ 'Maximize', 'ShowBlocks' ] }, { name: 'others', items: [ '-' ] }, ]; // Toolbar groups configuration. config.toolbarGroups = [ { name: 'document', groups: [ 'mode', 'document', 'doctools' ] }, { name: 'clipboard', groups: [ 'clipboard', 'undo' ] }, { name: 'editing', groups: [ 'find', 'selection', 'spellchecker' ] }, { name: 'forms' }, '/', { name: 'basicstyles', groups: [ 'basicstyles', 'cleanup' ] }, { name: 'paragraph', groups: [ 'list', 'indent', 'blocks', 'align', 'bidi' ] }, { name: 'links' }, { name: 'insert' }, '/', { name: 'styles' }, { name: 'colors' }, { name: 'tools' }, { name: 'others' }, { name: 'about' } ]; };

Regards
Gilles