Hello, I have uploaded a 4.5 brltty dos build with the relocatable-install option enabled, on http://brl.thefreecat.org/brltty/brltty45.zip I have also uploaded 5.0 and 5.1 dos builds on http://brl.thefreecat.org/brltty/brltty50.zip http://brl.thefreecat.org/brltty/brltty51.zip Samuel