You can download the same from :
http://www.piriform.com/ccleaner/download
Portable version of Ccleaner is available in the link below. Download the zip file and unzip. Run Installer. You can copy the Ccleaner folder to USB drive and use Ccleaner exe from the USB drive.Installation is not needed.
August 8, 2011 at 3:47 PM
CCleaner is a freeware system optimization privacy and cleaning tool It removes unused files from your system - allowing Windows to run