Make sure Maya is not running.
Install the Maya2DTS exporter plugin
Place the exporter plugin (maya2dtsExporter.mll for Windows and Maya2DTSExporter.lib for OS X) in the user plugins directory:
Windows: My Documents\maya\5.0\plug-ins
OS X: Home folder, Library/Preference/AliasWavefront/maya/6.0/plug-ins
Install the dtsUtility MEL script
Place the file dtsUtility.mel in the user scripts directory:
Windows: My Documents\maya\5.0\scripts
OS X: Home folder, Library/Preferences/AliasWavefront/maya/6.0/scripts
Install PNG support files (for Maya 5 for Windows only)
Place the file IMFPng.dll in the Maya image plugins directory:
C:\Program Files\AliasWavefront\Maya5.0\bin\plug-ins\image
Place the files libpng12.dll and zlib1.dll in the Maya bin directory:
C:\Program Files\AliasWavefront\Maya5.0\bin
Note: PNG support in Maya 5 is read-only, i.e. Maya will not output PNG files via the renderer.
(IMFPng is written by W.J. van der Laan. Complete source code is available at http://www.fmf.nl/~orion/IMFpng/. See the included readme file in the File Pack for more information.)
All of the necessary files are now installed.