'Database was created' -- if this wasn't done intending to make a standby database then your archivelogs are useless against it. Using some fancy LVM footwork would allow you to open the standby database, modify it, then roll it back to the pristine state and apply archivelogs against it again. I also heard someone on the Oracle.com forums suggest that flashback database might be able to properly roll back a DB such that archivelogs can again be applied to it, but I don't know if that will work or not.
Would a logical standby work for you better? Why don't you want a 'traditional' standby database?