Adapter Config error-can't connect to X11 window

Hi, all:
Hopefully someone can help me with this. I’m trying to execute the Adapter Configuration tool (v4.1) that’s on our development server (Sun OS 5.8) from my W2K machine via Reflection X v7.0 (which is set for terminal = VT400-7 and terminal-id = VT420). However, I keep getting the following error:

Exception in thread “main” java.lang.InternalError: Can’t connect to X11 window.
at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
at
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:124)
at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnv)
at
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:124)
at java.awt.Toolkit$2.run(Toolkit.java:499)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:492)
at java.awt.SystemColor.updateSystemColors(SystemColor.java:346)
at
at
at
at COM.activesw.adapter.tools.AdapterConfig.main(AdapterConfig.java:65)

Any help will be greatly appreciated…