What program do I use to merge Beamdog's BGEE and SOD together so I can use EET to install Trilogy?

It's telling me my SOD needs installed...it is installed, but it's in a separate folder. I just purchased all 3 packages via BeamDog, then copy pasted the installs from the downloader into my own folders (putting them on a flash drive ultimately) - THANK YOU for any guidance, I think once I know how to do this, I can use EET fine.