This is the updated version of my First Script which u can use to change Render Engines. Am planning to add more render engines if i get their RenderClass.names. I would like to add other renderers too but i need their rendererclass names. You can see how to get that at the end of the video. Hope you enjoy this simple script.
UPDATE:
OLD VERSIONS:
v3.00b screenshot:

Changelog for v3.00b:
--Fixed an issue with Irradiance Map Presets not updating correctly in Vray renderer
--Fixed an issue with Caustics settings still accessible even when its turned off
Changelog for v3.00:
--Added the ability to Expand the UI and setup some of the V-Ray settings
--Added 2 more Options for Default Renderer
--Added the ability to open Render Setup from the Menu
v2.00 screenshot
Changelog for v2.00:
--Added Krakatoa, QuickSilver, n-Tracer GPU renderers
--Added 3 options from Default Scanline Renderer
--Buttons related to third party renderers will be disabled if you dont have them installed
--Removed Material Editor selection
v1.04b:
Changelog for 1.04:
-- Nothing Much...Just a UI Adjuster
-- Fixed a Typo Error in the message box of Mental Ray Renderer
v1.02:
Changelog for 1.02:
-- Added the ability to change Material Editor
-- Added Material Reset Option: Now you can set standard or Arch & Design or Vraymtl to all 24 slots of Material Editor
-- Added My Youtube Channel 🙂
v1.00:
--Initial Release
airbrush · 2011-02-11
gwhelden · 2011-02-15
tassel · 2011-01-25