Sorry about that. 2005 was when the HCE was previously meant to be released. So it's a couple of years late... I guess I need to change the title.
In general, you might get some of the scens rated as 2005 to work on your Harpoon Gold edition (2002), but there's no guarantee. The HCCE release incorporates some new database fields not found in the HCGold edition. It might cause a crash for you if you play the older version. However, you might get lucky, too.