X server? $DISPLAY? Now what?
 

Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

x11drv: Can't open display: :0.0
Please ensure that your X server is running and that $DISPLAY is set correctly.

This is what I get when I try to install some windows software using wine.
What does it mean and how do I fix it?

That means that you're trying to run a program that
requires X as a different user than the one whose
X display you're working on. Quick & dirty solution:

As the owner of the X session: xhost +localhost
As the user who wants to install: export DISPLAY=localhost:0.0


Cheers,
Tink

Thanks Tink :) That seems to do the trick :) *bows for the guru* :D

That's probably the first answer I've gotten that solved a problem at first try :)