How to change diplay order of portlet page(tab)

[akumarkind]

Hi
I am developing my own portal and made my own theme and layout.

I made my mycompany-object.xml

<?xml version="1.0" encoding="UTF-8"?>
<portlet-app xmlns="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd"
version="2.0">


<portlet-name>LoginPortlet</portlet-name>
<portlet-class>org.mycompany.portlet.login.LoginPortlet</portlet-class>

<mime-type>text/html</mime-type>
<portlet-mode>VIEW</portlet-mode>

<portlet-info>
Login
</portlet-info>


<portlet-name>ProjectDefinitionPortlet</portlet-name>
<portlet-class>org.mycompany.portlet.projectDefinition.ProjectDefinitionPortlet</portlet-class>

<mime-type>text/html</mime-type>
<portlet-mode>VIEW</portlet-mode>

<portlet-info>
Project Definitions
</portlet-info>



<portlet-name>TasksPortlet</portlet-name>
<portlet-class>org.mycompany.portlet.tasks.TasksPortlet</portlet-class>

<mime-type>text/html</mime-type>
<portlet-mode>VIEW</portlet-mode>

<portlet-info>
Tasks
</portlet-info>



<portlet-name>SubTaskPortlet</portlet-name>
<portlet-class>org.mycompany.portlet.subtask.SubTaskPortlet</portlet-class>

<mime-type>text/html</mime-type>
<portlet-mode>VIEW</portlet-mode>

<portlet-info>
Sub-Task
</portlet-info>




<portlet-name>TimesheetsPortlet</portlet-name>

<portlet-class>org.mycompany.portlet.db.TimesheetsPortlet</portlet-class>



<mime-type>text/html</mime-type>

<portlet-mode>VIEW</portlet-mode>



<portlet-info>

Timesheets

</portlet-info>



<portlet-name>ResourcesPortlet</portlet-name>
<portlet-class>org.mycompany.portlet.resources.ResourcesPortlet</portlet-class>

<mime-type>text/html</mime-type>
<portlet-mode>VIEW</portlet-mode>

<portlet-info>
Resources
</portlet-info>



<service-name>PortalAuthorizationManagerFactory</service-name>
<service-class>org.jboss.portal.security.spi.auth.PortalAuthorizationManagerFactory</service-class> <service-ref>:service=PortalAuthorizationManagerFactory</service-ref>


</portlet-app>

it is displaying alphbetic order like: Project Resource Subtask Task timesheet default

Please suggest me how can i change order? and how rename default as Home?When i am renaming default as Home It is displaying 404 error on browser.

With Regards
Avanish