Problems with PATH for lyx-13x on MacOS X

[Bennett Helm]

With recent versions of lyx-1.3.6 (but not 1.4.0), the PATH environment 
is not set up properly. There are two problems:

1. It looks as though /usr/bin and /usr/local/bin are not properly 
added, so attempting to run the configure script or view files results 
in errors like the following:

sh: line 1: sh: No such file or directory
sh: line 1: pplatex: No such file or directory
sh: line 1: dvipdfm: No such file or directory
sh: line 1: latex2html: No such file or directory
sh: line 1: dvips: No such file or directory
sh: line 1: open: No such file or directory
2. It looks like now users must manually enter the path to their TeX 
installation in the preference dialog. It would be nice to package LyX 
so that this was not necessary.

So, is it possible to define a PATH and pass this to LyX without having 
LyX overwrite it?

Thanks.
Bennett