soc encounter installing

when i install the install scape of the soc encounter on the linux 11.4 . this error appear

Initializing InstallScape using JVM at /encounter/is/iscape/runtime/LNX86/bin/java. This might take some time...
Exception in thread "main" java.lang.InternalError: Can't connect to X11 window server using '0:0' as the value of the DISPLAY variable.
at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
at sun.awt.X11GraphicsEnvironment.access$000(X11GraphicsEnvironment.java:53)
at sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java:142)
at java.security.AccessController.doPrivileged(Native Method)
at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:131)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:68)
at sun.awt.X11.XToolkit.<clinit>(XToolkit.java:96)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at java.awt.Toolkit$2.run(Toolkit.java:821)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:804)
at com.khanpur.installer.gui.InstallerUI.main(InstallerUI.java:85)

what can i do ?
please help me as fast as possible
thanks in advance

check these discussion.. you will get the solution
Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable.

---------- Post added at 09:49 ---------- Previous post was at 09:47 ----------

**broken link removed**

---------- Post added at 09:51 ---------- Previous post was at 09:49 ----------

**broken link removed**
Troubleshooting - Google Web Toolkit - Google Code

really, thanks for you
but another error appear with me concerned on JVM

this error is :
Initializing InstallScape using JVM at /encounter8.1/is/iscape/runtime/LNX86/bin/java. This might take some time...
Use -help option for details on usage....

i'm sorry for annoying

again this thread can help you
[ubuntu] " No such file or directory" for an exisiting executable file [Archive] - Ubuntu Forums