My thanks to Davey and Vic for responding!
First, in my CCleaner folder there are only 2 files (CCleaner.exe and uninst.exe)! There is NO CCleaner.ini file as I would have expected. So I can't manually edit it as you suggested. I infer the installation process did not complete properly.
Second, I have installed, uninstalled (with CCleaner's Uninstaller), and reinstalled CCleaner 2.06 - all with the same lack of results. Each time I had no other programs running. And one time I rebooted to see if that would help matters - it didn't.
Third, when I clicked on the CCleaner's Desktop icon, a small black screen appeared (like from a command prompt) and it disappeared in a fraction of a second. Then nothing more happened. Both times it occurred so rapidly I could not read anything. This might be explained by not having a proper ini file.
Here is the info you requested:
CCleaner version: 2.06
OS, edition, 32bit or 64bit and version: Windows Vista Ultimate x64 SP1 (with all Updates installed)
Browsers and version: Internet Explorer 7 (not running), Firefox (not running), and Opera 9.27 (not running)
Security software and version: Kaspersky Internet Security 7.0.1.325 (not running)
Other data you think might be relevant: Dual Opteron 275s, 8GB of RAM, NVIDIA 8800 GTS 512MB, and 3 Raptor HDDs; Flash Player 9.0.124.0 (not running)
What did you do and then what happened?: Please see above.
Do you think trying an earlier version of CCleaner would be beneficial???
Many thanks from,
James