Security Essentials and Defender conflict?

[System]

I have Vista and Microsoft Security Essentials. If I go to Control Panel and try to access &quotChange startup programs&quot I keep getting a message saying that Windows Defender is turned off. As I understand it MSE requires it to be turned off so how do I get
rid of this annoying message which prevents me from going any further? Appparently I can bypass this by using &quotmsconfig&quot but what do I need to delete so that I can use the Control Panel directly?

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