NOTE: You can fined example into that script launcher to redeemer the necessary environmental as well as including complete on Windows, including the RenderMan-specific ones, Indermans in the following articles; Q100242: Create a katana launcher script for Windows.
NOTE: You can find an example launcher script to set the necessary environment variables on Windows, including the RenderMan-specific ones, in the following article: Q100242: Creating a Katana launcher script for Windows.