I created a bootable USB drive from VL5.9.1-SOHO.iso using unetbootin-linux-471. The system boots up fine, but the install step fails when it only searches the hard disk and dvd drive (which is broken) for the installation files.
I have tried VL6.0 (STD & Light) but couldn't resolve some video problems. I installed those via the dvd drive which was working then.
Edit on 10/26/2010:
Maybe this question is too lame to even deserve a response. Anyway, I thought I would share what I have found. Initially, my machine was running VL6.0 Lite and I was trying to upgrade to VL6.0 SOHO. Since I had a working machine, I was able to complete the installation from the USB drive by first copying the VL6.0 SOHO ".iso" files to a partition on the hard drive. However, I could not get either LILO or GRUB to work. Now I didn't have a functioning system. So, I created a VL5.9 SOHO installation USB drive. When the installation failed because the installation files couldn't be found, I was given the option of a shell prompt (not available with the VL6.0 SOHO installation!). From there I could mount the USB drive and the hard drive and copy the installation files (not the ".iso" files) from the USB drive to the hard drive. I could have partitioned the hard drive if needed. The installation went fairly smooth from there.