Accessible Ubuntu Install Impossible on Asus Netbook

[Dave Hunt]

Hi, List!

I've tried various flavors of Ubuntu on this machine, with none of which 
can I get an accessible install.  I made the usb install media with 
unetbootin in Windows.  When I boot any of them, I do not get a chance 
to choose language, accessibility options, etc.  Rather, they boot 
directly into Ubuntu desktop.  If I start Orca, I'm taken through that 
setup.  After setup, I log back in as ubuntu, with no password.  Orca 
will not start automatically, no matter the setting of this option in 
setup.  Once orca is starrted, I try the installer.  The installer comes 
up as inaccesible to Orca.  The rest of the desktop works as expected.  
I had none of this trouble when booting from cdrom.