running a query file of 42MB

I'm trying to run query generated by an import script. postgresql 8
onder windows XP.
the file is about 42MB, i've opened this file by pgAdminIII and start
the query, it inserts data into 3 tables and after makes some update.
the time is too much and it hangs up without any commit.

any body know another methode to run the query.

i've tried with the command line psql, but get errors because the file
is like:

insert into table1 (pkey) values ('xxx');
insert into table2 (pkey,field) values ('yyy',(select OID from table1
where pkey='xxx'));
update table1 set field1='a', field2='b', field3='c' where pkey = 'xxx';

insert into table1 (pkey) values ('xxx');
insert into table2 (pkey,field) values ('zzz',(select OID from table1
where pkey='xxx'));
update table1 set field1='u', field2='v', field3='q' where pkey = 'xxx';
.
.
.etc

the reason to do so is to get the OID for each record inserted into the
table1 and use that in the table2.
i've limited the query to 2 tables but there are more tables and also
more related fields from the same table.

in the psql i've tried this:
>psql -d dbname -u username -f file.sql
i've also tried with
>psql -d dbname -u username < file.sql

but get the error, pkey violatde. should i use a commit between each
record ?

regards,
kasem,
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