But that solution assumes that we know the old formatting of \theenumi. The following solution is better as I doesn't assume that:
\let\oldtheenumi\theenumi \newcounter{cntr} \setcounter{cntr}{1} \renewcommand{\theenumi}{\setcounter{enumi}{\value{cntr}}\oldtheenumi\addtocounter{cntr}{1}}
with mdwlist.sty you need only the two commands \suspend{enumerate} \resume{enumerate}
Herbert