Change Firmware!

Hello to all
I have one question about change the firmware in other word change colour menu & make new firmware , I have DSR 9500.
I want design new menu & change old menu , I think need to software for preview firmware & Afterwards upload to Set Top Box.
How can change colour menu?!?!?
What is name software??!!
Please help me!!!

Best Regards,

No way. Really.

Ok, BUT I need to help. Really