Yeah, so, I installed phpBBS, got everything working, went to flip the switch, and it told me I had to delete the install directory first with my FTP program.
Ok, no problem ... fire up the FTP s/w and promptly delete the /forums directory I had installed everything in, instead of the /forums/install directory I was supposed to delete.
OK, deep breath, go to once click installs, manage installs, delete phpBBS (and it tells me it does). Delete the database phpBBS had created.
All good right? No, now when I try to do a one-click install of phpBBS, it tells me phpBBS is already installed.
This is all, totally of my making as part and parcel of being a total &^%$#*& idiot ... but can any of you help bail me out here?