Hi everybody!
It's my first post here!

I don't know very well linux, anyway I used Debian before and now I'm trying to pass to Fedora.
I've installed a Fedora Core 6 on a Acer Aspire 1692 with a graphic card "ATI mobility radeon x700" (I needed to install its drivers to overcome problems with it after installation).
Anyway now I'm trying to use a program called "Paraview", but I have some new problems I can't overcome.
The output I get when I try to start Paraview is:
--------------------------------------------------------------------------------
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified
ParaView error: InitializeTcl failed
Tk_Init error: this isn't a Tk applicationcouldn't connect to display ":0"
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What kind of problem is it?
I've installed Tk and tcl (indeed, for example, my amsn starts succesfully and I think it needs them...) and anyway Paraview itself contains in one of its folders the Tk and tcl applications it needs.
Can anyone help me?
Thank you very much!