Are you talking about Windows' Internet Explorer?
If so I find that strange. I don't know too much about AOL but I though they used their own version browser.
If AOL has set itself as IE's Home Page, have you tried changing that within IE's Tools > Internet Options then the General tab? You say you tried everything but you don't mention that.
Windows 7 64bt. AOL took over my Explorer MSNBC page..I have tried everything..rude emails to AOL, "regedet..find..AOL..delete whatever"..still AOL shows up. I told them they were nothing but a virus. Please give me advice..John