Nope, none of the above appears in file and I added to but still, no luck.
Hi guy! I'm the author ... sorry for the headache there. The normal location where BOClean puts the config file is indeed the BOC427.INI located in the windows folder, but on Vista and some installs, Windows might copy it somewhere else under "documents and settings" and then use that copy instead. These "hide" features are there for corporate administrators who want to completely hide BOClean and make it difficult to make it reappear, that's why we did that.
Going on the assumption that there's likely a "virtual copy" in addition to the "real" one, do a "search for files and folders" for that BOC427.INI file. I'll bet there's another one somewhere. You'll need to be sure that the search is set to look everywhere including "system and hidden" folders ... the correct one to remove the "hide=" and "hide2=" entries (which WILL be there) will be the largest file you find if there's more than one copy in there.
If there are no other BOC427.INI files, and the one you found in the WINDOWS folder didn't have the "hide" and "hide2" entries, then it's likely that Windows itself decided to hide the icon rather than you having told BOClean to become invisible ... but give the above a try, should fix it ...