Welcome to the OpenMx Installation Forum. If you're here, you may be having problems installing OpenMx, but we're here to help. The first step is install R (http://r-project.org). You need to make sure that you have version 2.9.1 or the latest version as of August 2, 2009. Next, you need to run the command that Steve included in his email. That will install the dependencies required for OpenMx, namely Snowfall, and download and install the version of OpenMx that will work with your system. If you didn't receive any errors, then you're all set to try your first model (start with the User Guide in Documentation [6]). If you did receive an error, be sure to create a new forum topic in this forum, and copy and paste the output (including the error) that you received from R along with the output when you run the following command in R:
R.Version()
For example, my R.Version() outputs the following:
> R.Version() $platform [1] "i386-apple-darwin8.11.1" $arch [1] "i386" $os [1] "darwin8.11.1" $system [1] "i386, darwin8.11.1" $status [1] "" $major [1] "2" $minor [1] "9.1" $year [1] "2009" $month [1] "06" $day [1] "26" $`svn rev` [1] "48839" $language [1] "R" $version.string [1] "R version 2.9.1 (2009-06-26)"
Good luck!