You can always find the file formats listed on our product comparison page http://www.capturesweden.com/Products/Comparison.aspx since it is different between the editions. All editions support SKP, 3DS & OBJ files and the Extended Edition adds DXF & DWG files.
A good description on how to import, with images, is available starting on page 90 in the reference manual, so I will ask you to start there and let me know if there are more specific questions?