Need a script that bakes INSERT script from SELECT results

I'm a novice to PL/pgSQL, and I'm curious, how to write function, that wraps SELECT results into INSERT script.

The functionality I need is about to replicate table data into remote DB.

I have tried dblink_build_insert(), but it requires primary key on tuple to create INSERT script from. I would prefer filter clause to primary key, to generate either multiple inserts or one multi-row insert.

Could someone post an example how to LOOP through row fields to wrap them into 'VALUES(...,,)' list?

Thanks,
Olksy