Types not exported/restored

I am trying to do a backup/transfer of database, and possibly the whole
server from one computer to another in a network using Pgadmin III included
in PostgreSQL 8.2. Tables were exported but nothing was exported in types.
Hence, some columns of the tables are missing, I've noticed that these are
tables having dependents in Types(which is missing) . Added to that, only
the public schema was exported and restored but not the other schemas. How
could I totally backup the whole database from one computer to another
completely?

I am new to using PostgreSQL and database as a whole and just starting to
learn.
I am dying for almost a week looking for the answer
Help please... Thanks :)
-these are the screenshots to better explain a novice like me :)
fist one is the screenshot of the db to backup, the 2nd one is incomplete
the restored db
http://www.nabble.com/file/p18395521/db_source.jpg
http://www.nabble.com/file/p18395521/db_restored.jpg

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