Change machine name after installing Sharepoint

I have tried only on a standalone machine. Follow the steps to sort out the issue

1. Change alternate access mappings in Central Administration
   
   1. Central Administration > Operations > Alternate access Mappings
      
   2. Edit each mapping so that it reflects your new server name
      
      1. Ensure port numbers are the same
         
2. Use stsadm renameserver operation
   
   1. 
      

      stsadm -o renameserver -newservername  -oldservername  

3. Rename Server
   
   1. My Computer > Properties > Computer Name (tab) > Change (button)
   2. Type in new name of server
   3. Reboot server

How to increase image disk size in VM Workstation 6.5

If you want to increase the image disk size after you created it then refer to this link and look for VM Workstation section.
Follow the steps to fix it