Thanks Tarq57 for reply. It will definitely solve the error.
I have recently Updated my Windows xp sp3 with Microsoft Office Genuine Advantage Notification as shown in screenshot. I have no startup errors when I updated my computer and used it for three days regularly (starting computer four times daily), it happened only when I cleaned my temporary files with CCleaner (selected with default options).
Today is 19 September, 2009 - Updated with Microsoft Office Genuine Advantage Notification on 16 September, 2009 as shown in screenshot.
samnetx