Switch between header/source in QtSDK

Hello,
I use QtSDK 1.1.1 and I have a problem with switching between headers and source code of the Qt classes.
I have installed both QtLibraries (Development libraries) and QtSource of course they are in separate/respective directories and Development Libraries lack of sources. In QtCreator obviously I can't switch between headers/source (of QtClasses) because in QtDir there are only headers.

I know that I could compile/use/copy source into separate directory and that would solve the problem, but I really like the way updater works and I don't want to do manually, each time updates are available, these steps (copy files over etc.).

So the question: is there a way to set up QtCreator to look for sources in one location and for headers in another one?
Or maybe there is other way around this?

Thank you for any reply.
Best regards