Attached Link: http://www.righthemisphere.com/products/dexp/

Do you have Cinema 4d or did you just download an object file off the web? Deep Exploration will let you open dozens of 3d formats and save to something that Bryce can read like 3ds. It's $299 to buy. They have a 30day trial you can download from the website. It will keep track of the installation date and shut down 30 days later regardless of weather you use it or not.