Problem with GX package initialization

[Gabriel - ud Carvalho]

Hi everybody,
I have problem initializing the GrAds at my Pc:

I'm trying to run GrAds at a Linux server, Ubunto, fully actualized.
I have already installed GraDs 1.8sl11, made all the PATH's corrections,
etc...
when i try to exec. grads in the console, it gives me the following problem:

GX Package Initialization: Size = 11 8.5
Error in GXSTRT: Unable to connect to X server

what shoud i do?
thnx,
Gabriel
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