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This fix is only possible for computers running the 32-bit version of Vista. 64-bit computers cannot perform this.  Click here for instructions on determining if your copy of Vista is 32-bit or 64-bit.    Advanced tab and then click Settings... in the "Performance" section. Data Execution Prevention tab. ". Add... and then navigate to C:\Windows\System32\. dllhost.exe. These can be found in their respective Program Files folders.

Summary:
Determine if Vista is 32-bit. Click the Start button to open the Start menu. Right-click on "Computer" and select "Properties". Click the "Advanced system settings" link. Click the . Click the . Select "Turn on DEP for all programs and services except those I select: Click . Select . Repeat the adding process for the DivX and Nero EXE files.