Qtopia and Qt/X11 in the same system

Hi everyone,
Do I need to install Qt/X11 and Qt/embedded(on top of which Qtopia is built)both before installing Qtopia??
Or, is Qtopia a separate package by itself which can run independently(like the Qt/x11 package I am using at present).
If it can exist independently,Can I have Qtopia and Qt/X11 in the same system without having problems while building applications?

You can have Qtopia and Qt/X11 side by side. Without Qt/Embedded I wouldn't even try to run Qtopia, even if it is possible, it would have little sense - Qtopia was not designed to work with the desktop Qt.

Thanks for the answer.
Can anyone give me the download links for Qt/embedded and Qtopia?All the download links I have got are either broken or the page doesn't seem to exist.
Thanks in advance.

ftp://ftp.trolltech.com/qt/source/