Disable command-tab and/or kill dock

Hello,

Is there a clever terminal command or a simple hack that will disable command-tab switching between apps? If not, can I kill the dock completely to regain the ability to use command-tab in QuarkXPress?

This keyboard shortcut conflict is driving me nuts trying to stay productive in Quark. The PullTab haxie is not Leo-friendly yet, so I need a solution ASAP.

Thanks!!!