Assistance in importing a csv file into Postgresql

Dear List

I have a csv file that I would like to import into Postgresql, the
structure of the csv file is in this format:
"field1","field2","field3","field4"
"1","2","RD","00001"
"2","2","RD","00001"
"4","2","RD","00001"
"4","2","RD","00001"
"5","2","RD","00001"
"5","2","RD","00001"
"5","2","RD","00001"
"6","2","RD","00001"
"1","3","RD","00003"
"2","3","RD","00003"
"3","3","RD","00003"
"4","3","RD","00003"
"4","3","RD","00003"
"5","3","RD","00003"
"5","3","RD","00003"

What I would like to do is

If field1=1 make table1 and insert the rest of field1=1 into this table
If field1=2 make table2 and insert the rest of field1=2 into this table

Hence in this example one will have table1, table2, table3, table4,
table5 and table6

How can I accomplish this using the COPY command.

Postgresql is running on a Windows platform.

Thanks in advance.

--
Sindile Bidla