I had no luck at all with the scribus table facility and importing a Postscript image didn't work either. So I converted the PS image to tif at 300dpi in Gimp and imported it successfully, though with some blurring of the type.
I used lzw compression. -- John Culleton Able Indexing and Typesetting Precision typesetting (tm) at reasonable cost. Satisfaction guaranteed. http://wexfordpress.com
