The package below has been installed at tug.ctan.org and should soon be at your favorite mirror.
Thanks again, Jim Hefferon Saint Michael's College
.........................................................................
The following information was provided by our fellow contributor:
Name of contribution: fouridx Author's name: Stefan Karrmann Location on CTAN: /macros/latex/contrib/fouridx Summary description: An alternative to sideset and leftidx. License type: lppl
Announcement text: ---------------------------------------------------------------------- This package enables left subscripts and superscripts in math mode. These subscripts and superscripts are automatically raised for better fitting to the symbol they belong to. This is done in such a way that the left and right subscripts and superscripts are set on the same line, respectivly. ----------------------------------------------------------------------
This package is located at http://tug.ctan.org/tex-archive/macros/latex/contrib/fouridx . More information is at http://tug.ctan.org/pkg/fouridx (if the package is new it may take a day for that information to appear). We are supported by the TeX Users Group http://www.tug.org . Please join a users group; see http://www.tug.org/usergroups.html .