I'm pretty sure that texture baking is only in version 6, it hasn't been terribly useful to me anyway... it only seems to work with VERY low poly models (like a cube or something).
What format are you trying to export in Doggie? Not all file formats export textures. You could try getting the luuv plugin and try exporting in .obj http://www.pinacoderm.com/tsx/luuv/
That's about all I can tell you, sorry. I haven't really messed around with trueSpace for a while so I can't really remember all the contortions you need to go through to get it to do what you want.
What format are you trying to export in Doggie? Not all file formats export textures. You could try getting the luuv plugin and try exporting in .obj http://www.pinacoderm.com/tsx/luuv/
That's about all I can tell you, sorry. I haven't really messed around with trueSpace for a while so I can't really remember all the contortions you need to go through to get it to do what you want.