The problem RenderMonkey 1.82 with Geforce 9600GT

Hi all.
I’m testing the RenderMonkey GLES examples on my PC with Geforce 9600GT.
Even though all *.rfx files compiled well, Preview Window Screen in RenderMonkey showed all black. and GL2 example file work well.
Do you have any idea to show GLES Preview in my PC with Geforce 9600GT??