Ah, VS6, the last good version before they included 900 pounds of useless .net dependencies in each and every executable whether they're needed or not...
It's under Project Settings, in the Debug tab, as "Program Arguments".
Be sure to select "Settings for ... Debug" on the dropdown box on the far left, left, not Release, as there are separate settings for each build mode.
You should then be able to run the debug build right in the IDE and have it given those arguments.
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