Problem editing .login or .profile

[vinztan]

Hi,

I'm trying to put some software application node commands in my PATH environment variable. The user manual says that I have to modify the file "/Users/Username/.profile or .login".

Anyway, it needs me to do this...
open /Applications/TextEdit.app .profile
and add this...
PATH="/Applications/software.app/Contents/MacOS:$PATH"

but I keep getting this...
No such file: /Users/vinz/.profile

I can't get past trying to open my .profile. Anyone kind enough to shed some light on this? Thanks!