Create custom page layout

Hi experts,

I'm creating a new custom page layout, but it doesn't work..

here my step by step:

1. Download default 'com.sap.portal.layouts.default' from System Admin > Support > Portal Runtime > Browse Deployment > path: ROOT/WEB-INF/deployment/pcd
2. Rename the PAR file in 'custom.portal.layouts.default', this is its structure:
   1. \META-INF
   2. \PORTAL-INF
      1. portalapp.xml
      2. \jsp
3. Add a new jsp file into jsp folder 'custom.jsp'
4. Modify portalapp.xml adding 'custom.jsp' data
5. deploy my new PAR file

If I try to create a new Layout into PCD I don't see 'custom.portal.layouts.default', why? Am I missing something??

Thanks in advance, best regards

AT