From: "Aleksander Gorohovski" <CyrTeX-ru@vsu.ru>
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To: "Cyrillic TeX Users Group" <CyrTeX-ru@vsu.ru>
Subject: Re:
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Похоже простых способов настройки нет.

Поразмышлял как бы это сделать.
И вот что получилось.

%%%%%%%%%%%%%%%%
\makeatletter
\renewcommand{\@idxitem}{\par\hangindent=20pt}
\renewcommand{\indexspace}{\par\vspace{20pt plus 5pt minus 3pt}}

\renewenvironment{theindex}
{\clearpage
\addcontentsline{toc}{section}{Предметный указатель}%
\thispagestyle{empty}\let\item\@idxitem\setlength{\parindent}{0em}
\setlength{\columnsep}{10pt}
\begin{multicols}{3}[\centering\chapter{ПРЕДМЕТНЫЙ УКАЗАТЕЛЬ}]
\thispagestyle{empty}
\par\bigskip \raggedright
}
{\end{multicols}}
\makeatother
%%%%%%%%%%%%%%%%%

Может кому-нибудь ещё пригодится
:)

Спасибо всем кто отозвался.