I did the installation from both "surfprox.exe" and "surfprox3.exe" (I can't figure what the difference is). Then I downloaded every "surfprox.dll", "proxstat2.zip", "proxiis4.dll" files I found in the FTP directory and tried each one. Every time I configure the IIS Service Manager adding the DLL as an ISAPI filter, I hear two beeps and it gives me a red "down" arrow.