Insert data to new table

Hi, i using postgreSQL in WinXP but i can't insert data into new table.

 

INSERT INTO my_table ("Name")
VALUES ('ABC');

ERROR:  array value must start with "{" or dimension information

or

INSERT INTO my_table (Name)
VALUES ('ABC');
ERROR:  column "name" of relation "my_table" does not exist

 

but i able to select the record. Thank You.