CS6 Installing and Setting Up

I accepted the 30-day trial for CS6 and downloaded the program, but I haven;t been able to installs or set up this program. I get an error message saying "Uncheck the Use grphics Proessor check box in the Performance anel of the Preference dialog". How do I do this.  My computer meets the system requirements of CS6, namely,  I'm running Windows 7 using a 64 bit 2Ghz processor, 2 GB or RAM, more than 1 GB of available hard-dist space for installation,  with 1024x768 display and minimum of 512MB of VRAM on a Dell Inspiron E1505 lap top.