1. Download necessary files from here .
2. Copy the qtcurve.dll to the folder Psi+/styles (pre-creating the appropriate folder styles in a folder with psi.exe).
3. Start the Psi + one of the commands:

psi.exe -style qtcurve

psi.exe -style plastique

psi.exe -style cde

psi.exe -style motif

psi.exe -style cleanlooks

psi.exe -style oxygen

psi.exe -style cleaRlooks

• Create a shortcut to a psi.exe, in the shortcut properties to register the command after the quotation marks (example: “C:\Program Files\Psi+\psi.exe”-style oxygen) and run the Psi+ by this shortcut.

• Create a bat file or cmd file (an example of content: start psi.exe-style oxygen) and run Psi+ by this file.