Ahhhhh my friend....here are the types of files that Bryce supports....
3mf./,3dmf QuickDraw3D
.3ds 3D Studio Max
.b3d Bryce 3D
.cob/.scn ****Caligari Truespace****
.ddf USGS Digital Data File
.dem USGS or VistaPro DEM
.dxf AutoCad
.elev World Construction Set
.hf Rayshade Heightfield
.id4 Infini-D
.lws/.lwo Lightwave
.obj Wavefront
.pgm Portable Gray Map
.rds Ray Dream Studio
.vsa VideoScape
.wrl VRML 1.0
Anyone question let me know...................