Reserved words and workarounds...

I am attempting to convert an existing DB and client code from DB2 and/or Oracle 
to run using PostgreSQL.

One major problem is that there appear to be a number of words that cannot be 
used as column names.

Specifically, the DB creation SQL includes the following:

create table table1 (init-id integer, offset integer);


which barfs at the column-name "offset".  Likewise, any SQL which attempt to
insert a value into "offset" causes a problem.....

Changing the source code of the client program, which generates the SQL, is not 
an option.  Is there a fix or kludge which will allow Postgres to get by this
problem?

What other words are restricted from being used as column names?

Thanks,

Matt