New Apple Gets Shined Hoping to boost recently slackening sales of its flagship product, Apple Computer Inc. is using the dog days of summer to unveil the redesigned iMac, opening the curtain on its popular desktop computer at the Apple Expo in Paris. &lt;FONT face="verdana,MS Sans Serif,arial,helvetica" size="-2" color="#666666"&gt;&lt;B&gt;-washingtonpost.com&lt;/B&gt;&lt;/FONT&gt;