Errors while installing on PostgreSQL 8.4 database

While installing the "Hotel booking" and "Hotel room" got these errors and bellow mentioned tables were not created:

    * warning: pg_query() [function.pg-query]: Query failed: ERROR: type "numeric_unsigned" does not exist LINE 5: value numeric_unsigned(15, 3) NOT NULL default 0, ^ in C:\Servers\Apache22\htdocs\includes\database.pgsql.inc on line 139.
    * user warning: query: CREATE TABLE hotel_occupancy_modifiers ( hoid serial CHECK (hoid >= 0), threshold int_unsigned NOT NULL default 0, adult_child varchar(5) NOT NULL default 'adult', value numeric_unsigned(15, 3) NOT NULL default 0, PRIMARY KEY (hoid) ) in C:\Servers\Apache22\htdocs\includes\database.inc on line 529.
    * warning: pg_query() [function.pg-query]: Query failed: ERROR: type "numeric_unsigned" does not exist LINE 4: value numeric_unsigned(15, 3) NOT NULL default 0, ^ in C:\Servers\Apache22\htdocs\includes\database.pgsql.inc on line 139.
    * user warning: query: CREATE TABLE hotel_rate_modifiers ( hrmid serial, method varchar(7) default 'value', value numeric_unsigned(15, 3) NOT NULL default 0, PRIMARY KEY (hrmid) ) in C:\Servers\Apache22\htdocs\includes\database.inc on line 529.
    * warning: pg_query() [function.pg-query]: Query failed: ERROR: type "numeric_unsigned" does not exist LINE 4: rate numeric_unsigned(15, 3) NOT NULL default 0 ^ in C:\Servers\Apache22\htdocs\includes\database.pgsql.inc on line 139.
    * user warning: query: CREATE TABLE hotel_rate_calendars ( hrid int_unsigned, caldate timestamp without time zone, rate numeric_unsigned(15, 3) NOT NULL default 0 ) in C:\Servers\Apache22\htdocs\includes\database.inc on line 529.