KOMA-Script report: float numbering

[Rich Shepard]

I'm using unnumbered sections and subsections in a KOMA-Script report.
Floating figures and tables are numbered 0.n because there is no section
number.

I tried adding to the preamble \setcounter{number}{0} but that didn't work.
I have a vague recollection of using 'renumber' for something like this but
cannot find it in my web searches.

A pointer would be very helpful.

Rich