Is it possible (postgresql/mysql)

Hello List,
PostgreSQL 8.0.1 (on Solaris 9)
There is a PERL program that a friend purchased which is used to create
tables on a MySQL database, and of course ;) I want to run this on a
PostgreSQL database server instead. The below is the code:
$sth=runSQL("CREATE TABLE someTable (
date_create bigint NOT NULL,
date_end bigint NOT NULL,
username VARCHAR(20) NOT NULL,
$cat_definition
id serial PRIMARY KEY,
status VARCHAR(20) NOT NULL,
$adfields
visibility TEXT NOT NULL,
priority TEXT NOT NULL,
template TEXT NOT NULL,
view bigint DEFAULT 0 NOT NULL,
reply bigint DEFAULT 0 NOT NULL,
save bigint DEFAULT 0 NOT NULL,
updated bigint,
photo VARCHAR(1) NOT NULL DEFAULT '0',
INDEX(username),
$cat_index
INDEX(date_create) );");

What my question is, the "INDEX(...)" function calls, which work this
way on MySQL, don't work in PostgreSQL. Does anybody know what a
synonymous way to modify the above code, for compatibility with PostgreSQL?

FYI: yourVariable INT UNSIGNED AUTO_INCREMENT(MySQL)
can be replaced by
yourVariable serial

Thanks group!

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