Well that's odd. I'm in the middle of this thing now, and instead of the PCIRootUID= part, I left that out, and this time just entering "-x -v" seems to have gotten me farther. BTW I am using more RAM this time.
But not very much farther. I have a window where I can "Use English for the main language", but when I try to make a different choice, it doesn't move the highlight, and while I have a mouse cursor, it won't let me do anything like clicking on the little "-->" circle on the bottom right of the window and move along. Further, I can only make my Caps Lock light light up. The other 2 don't respond. Now, maybe they're just trying to make sure you're not diverted some other way or some such thing, but I'm stuck anyway.
Maybe I'll try the 4 GB RAM thing again.Edit
: Er, check that. Now it's moved on for some reason. More as I progress.