At the moment, I think the best way to import certain pages from a pdf is to make use of pdftk. One of the many things it can do is break a pdf into single pages. It would go like this:
pdftk mydoc.pdf burst
Then these separate pages can be imported into Scribus.
pdftk can be found here: http://www.pdfhacks.com/pdftk/
I have SUSE 10.0, it's included in the distro as well.
S.H.
