> Yes, I'm mostly concerned with paths. =A0 I'd like to write everything =
=A0
> in Unix style and just have it =A0automatically converted somehow so =A0
> everything stays relatively legible.

You shouldn't write a filename or whatever in unix style. Ruby has
excellent libraries for dealing with pathnames. Take a look at the
File and the Pathname classes, which provide everything you need for
writing cross-plattform apps, and use the methods they provide.