gimp cannot open display:

[revivo73@…]

Hello,

I'm not sure it it's the right place to post this but I've just installed the gimp on my Mac OS X 10.4.11 PPC (Xcode v2.5) using MacPorts 1.9.2 (Just a note: I had to select the -atlas variant to install py25&py26-numpy).

When I #gimp I get:

(gimp:334): Gtk-WARNING **: Locale not supported by C library.
        Using the fallback 'C' locale.
Cannot open display: 

I've browsed thru other posts at macports.org on this problem but all of them had a display such as ":0.0" but in my case there's no display at all. I've tried these:

setenv DISPLAY :0.0    --> ~/.bashrc
DISPLAY=:0            --> ~/.xinitrc

I suspect they are the right thing to do, however. What should I do now? Thanks.