Outlook + OE default delete buttons

A trivial thing I know, but my Logitech mouse auto-jumps to any default
button.
If I delete items from Outlook, the 'Yes" button is highlighted as default &
the cursor jumps to there.
With OE, it's the reverse.
Does anyone know of any Reg.. change so OE 'Yes" becomes the default.
A I said, petty thing, but the no. of times I automatically click on "NO'
out of habit tends to become a bit irritable, as I then have to use another
2 mouse actions to get it right.

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johnf