CTAN has a new package: skeycommand

[CTAN Announcements]

This should arrive at your local mirror within a day.

Jim Hef{}feron
Saint Michael's College

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The following information was provided by our fellow contributor:

Name of contribution: skeycommand
Version number: 0.1
Author's name: Ahmed Musa
Summary description: Create LaTeX-style commands and environments using keys and 
  parameters together.
License type: lppl

Announcement text: 
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Create LaTeX-style commands and environments using 
parameters and keys together. The user interfaces are 
minimal, only slightly different from the familiar 
\newcommand and \newenvironment syntaxes.
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This package is located at 
   http://tug.ctan.org/tex-archive/macros/latex/contrib/skeycommand
.  More information is at
   http://tug.ctan.org/pkg/skeycommand
(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 .