1. Place shaders_p.dll and (or if you have linux or mac shaders_p.so) to "Maya_install_dir"/mentalray/lib
2. Place shaders_p.mi to "Maya_install_dir"/mentalray/include
3. Place all *.xpm to "Maya_install_dir"/icons
4. Place all *.mel from 'AE' to "Maya_install_dir"/scripts/AETemplates
5. Place all *.mel from 'attrPresets' to "Maya_install_dir"/presets/attrPresets/p_MegaTK
6. (Optional step, for swatches) Replace original mentalrayCustomNodeClass.mel in "Maya_install_dir"/scripts/others with script from 'mel_override'
Warning! (for win only) If you have following error during render:
LINK 0.0 error 191007: cannot load C:\Program Files\Alias\Maya7.0\mentalray\lib/shaders_p.dll, This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem.
You should install "Microsoft Visual C++ 2005 SP1 Redistributable Package"
You may download it here:
Microsoft Visual C++ 2005 SP1 Redistributable Package (x86)
Microsoft Visual C++ 2005 SP1 Redistributable Package (x64)