You are so immensely full of shit...
To prove that you CAN edit files in
/etc using the TextWrangler downloaded from the Mac App Store I have recorded a video of me doing JUST THAT! I even opened TextWrangler using sudo to show that I can write to a config file.
http://www.youtube.com/watch?v=tWAKQjJWJvk
http://www.youtube.com/watch?v=dvULnO52RY0
I suspect that you didn't notice the Enable: All TextWrangler Documents drop down menu. Don't ask me why that's necessary, but changing it to everything made all the
.conf files selectable. So yeah, you're full of shit and yet you've been modded +5 insightful...