Templating the admin emails

Hiya

I made a copy of wpsc-email_style.php and renamed it to wpsc-email_style_purchase_report.php and added some test content but when I upload and test the system it seems to ignore it and sends me the the old one (using wpsc-email_style.php).

I’m trying to follow the diagram: but not having much luck.

Could you help point me in the right direction please?

Thanks

http://ww.wp.xz.cn/extend/plugins/wp-e-commerce-style-email/