I tried to solve the problem with hijacked about:blank homepage as follows (Windows ME):
I located the .dll files with SpywareGuard or BHO Demon 2.0. In my case:
C:\windows\bruhh.dll/sp.htm#29126
The size of the file was 91kB.
I opened the file with notepad in windows explorer. I looked for more .dll files of the same size in windows folder and system folder. I found more than 10 of them under the names tdfva.dll, addgn.dll, addgn.dll, apiix.dll, sdkyq.dll, taddwq.dll, syzda.dll, ntpt32.dll, javacp32.dll, netaf32.dll, javaxo32.dll, netan.dll, apicz32.dll, cryk32.dll. I opened them all with notepad. I found out that the content of all files is the same as the content of the detected file bruhh.dll. I deleted the content of the files one after other and saved the changes (under their original names). So all the mentioned .dll files are now empty (and harmless) files in windows and system folders. Since then I have no problems.
