Problems with clear case plugin eclipse

I have a following problems with eclipse, when I installed ClearCase plugin from this url http://www3.software.ibm.com/ibmdl/pub/software/rationalsdp/clearcase/60/update/windows/ :

Has anyone experienced the similar problem? I'm using Windows 7 and eclipse galileo. I've installed the plugin from this URL, what can I do to work this problem out?

For those who can't see tinypic images

+----------------------------------------------------------------------+
| Connect to the Rational ClearCase failed                             |
|                                                                      |
|     Connect to the Rational ClearCase failed                         |
|                                                                      |
|     Reason:                                                          |
|     Select Details >> for more information.                          |
|                                                                      |
|                                     +------------+   +------------+  |
|                                     |     OK     |   | << Details |  |
|                                     +------------+   +------------+  |
|                                                                      |
|Could not connect to the Rational Clearcase. Please ensure that proper|
|version of ClearCase is installed with the proper patches. Consult the|
|ClearCase SCM Adapter documentation for further details.              |
|                                                                      |
|                                                                      |
|Provider name: IBM                                                    |
|Plugin name: Rational ClearCase SCM Adapter                           |
|Plugin ID: com.rational.clearcase                                     |
|Version: 7.5.0.v200910221234                                          |
+----------------------------------------------------------------------+

Google doesn't help much ..

I have no problem with that plugin (except the MVFS layer does not work for now, since dynamic views are not yet supported on windows7), provided you do have the exact tree

yourEclipse
  eclipse
    plugins
      com.rational.clearcase.help_7.5.0.v200910221234
      com.rational.clearcase.activities_7.5.0.v200910221234
      com.rational.clearcase_7.5.0.v200910221234
    features
      com.rational.clearcase_7.5.0.v200910221234
      com.ibm.rational.clearcase.ccrefresh_7.5.0.v200910221234
      com.ibm.rational.clearcase.ccimport.feature_7.1.0.v200905202348--08422A2_242663

So you can start and check if you do see this configuration.
Note: I only install it on Eclipse Galileo 3.5 and Eclipse Helios 3.6Mx.

Currently, version 1.6 of the JVM is not supported. To use this integration successfully, you must downgrade to JVM 1.5.