How to Turn Off the Data Execution Prevention feature (DEP)

Our software may require you to disable DEP, a memory buffer overrun protection feature.
If you are experiencing problems running our programs, you need to disable DEP.
Here are the steps. Just disable DEP for the program, don't disable it for your whole system.

1. Click Start
2. Select Control Panel
3. Select System
4. Click the Advanced tab
5. In the Performance region select Settings
6. Click the Data Execute tab in the dialog box that opens
7. Select Turn on DEP for all programs and services except for those I select
8. Click Add.
9. The open dialog box will open. Browse and select your application.
10. Click Open
11. Click Apply
12. Click Ok
13. Reboot

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How to Turn Off DEP - Vista Screenshot

How to Turn Off DEP on Vista