While this is best asked over at the piriform forum, I can answer this one
first custom locations for browsers (Chrome, Firefox only) http://www.piriform.com/docs/ccleaner/a ... a-browsers
Next "Barracuda" by this do you mean opera 11.10? if so Opera is cleaned normally
Opera portable or OperaUSB ccleaner is not able to insert an entry as windows does not have a enviromental variable for portable
you can, however create a winapp2.ini entry for your program if you always use the same drive letter, however you lose the benefit of centralized cookie exclusion.
as with other browsers CCLeaner cleans browsers with special keys which the developers do not provide us, so I can't help make it work as if the browser were installed.
If you have any more issues with this, you can start a thread and ping me to it. I'm Nergal (a moderator) over at Piriform's forum.
Finally for those future readers
it is enough to put "%locationofccleanerinstall%\ccleaner.exe" /export (where %locationofccleanerinstall% is replace by the location of your ccleaner install) besure to use the quote marks if your location has spaces (as does the Original Poster's). This command will place the win*.ini files in the folder %locationofccleanerinstall%
(I use the word "install" loosly I know we are talking portable programs here