Here's how to get hibernate-tools 3.1beta4 to work, disabling any MyEclipse Hibernate functionality (NOTE: This is only meant as a workaround if you absolutely NEED hibernate-tools, following the steps below might seriously screw your Eclipse/MyEclipse installation. So please only proceed if you really know what you're doing!)

OK, on to the gory details...
以下翻譯開始

1. Locate the MyEclipse install location, it should contain two folders "plugins" and "features". Let's call this $MYECLIPSE.
   進入MyEclipse目錄，然后將找到plugins和feature兩個目錄，下面我們將MyEclipse的目錄叫做$MYECLIPSE
   
2. Create two folders named "disabled_plugins" and "disabled_features" in $MYECLIPSE.
   在$MYECLIPSE建立兩個空白目錄disabled_plugins和disabled_feature
   
3. Move the MyEclipse Hibernate feature (folder: $MYECLIPSE/features/com.genuitec.myeclipse.hibernate_4.0.100 ) to the "disabled_features" folder
   把“$MYECLIPSE/features/com.genuitec.myeclipse.hibernate_4.0.100”目錄移動到disabled_features中
   
4. Move the following folders from $MYECLIPSE/plugins to "disabled_plugins":
   
   
   
   1. com.genuitec.eclipse.hibernate_4.0.100
      
   2. com.genuitec.myeclipse.hibernate_4.0.100
      
   3. org.hibernate.eclipse.console_4.0.100
      
   4. org.hibernate.eclipse.mapper_4.0.100
      
   5. org.hibernate.eclipse_4.0.100
   
   把$MYECLIPSE/plugins 中以上的五個目錄或文件拷貝到 disabled_plugins目錄中
   
5. Last step: remove the dependency from the main MyEclipse feature. Open the file $MYECLIPSE/features/com.genuitec.myeclipse.enterprise.workbench_4.0.100/feature.xml.
   Locate the following snippet:
   最后一步，修改“$MYECLIPSE/features/com.genuitec.myeclipse.enterprise.workbench_4.0.100/feature.xml”這個文件，找到下列代碼
   

   Code:

   <includes ? ? ? ? ?id="com.genuitec.myeclipse.hibernate" ? ? ? ? ?version="4.0.100" ? ? ? ? ?name="MyEclipse Hibernate Support"/>

   
   ... and comment it out, like:
   注解它，修改后的代碼如下
   

   Code:

   <!-- <includes ? ? ? ? ?id="com.genuitec.myeclipse.hibernate" ? ? ? ? ?version="4.0.100" ? ? ? ? ?name="MyEclipse Hibernate Support"/> -->

   
   Now restart Eclipse (preferably using "-clean" switch), install hibernate-tools 3.1 (if you have not already done so) and enjoy!
   重新啟動MyEcliplse然后按照正常安裝插件的方式安裝 Hibernate tools 3.1