ago who was one of the developers of WUBI for Ubuntu gave me an answer at Ubuntu forums
that looks promising but as always the gap between an expert and a very clumsy nooby
make the answer almost not usable. I barely get what he says and I sense that that is
the answer he wants to give. I don't expect him to give a step for step advice as can
be seen as Lin'nWin site on how to do things.
so I have to wait until somebody who knows more than me just does it.
A loopinstallation is like a frugal installation but customized for your hardware as opposed to be a "generic" install (which is optimized for "portability"). In fact a loopinstallation is exactly like a real installation. That of course also means that a loop installation is far faster than a frugal installation.
By the way, wubi already supports frugal installation (not r/w although it can be changed by adding a persistent file)... Run wubi.exe from windows, then when you reboot press ESC and choose the last option... That is a frugal installation... If you want it permanent simply make it the default boot option in ubuntu\install\boot\grub\menu.lst. Note the demo mode option is deleted after a linux side loop installation.
I appreciate his answer but knowing me I trust me would screw up when I follow such advice
cause I fail to get waht he says. Too many unknowns there for me to get it right.