Confirmation email token issue

Alright, I believe I know how to do some formatting (although I haven't done much yet, but I know it's working), and my custom cc processing module seems to be working. Ouch! My brain is melting. What a way to get my feet wet in the Drupal waters!

Anyway, two (hopefully!) final questions:

1. My email confirmations aren't working properly. Some of the tokens in the default invoice/confirmation email don't seem to be working. I know the token module is installed, and some are working okay. Basically, all the site-wide ones are fine (site-name, site-email, etc...), but none of the order-specific ones (txn-billing-firstname, items, and so on) work. They're just in the email as [txn-billing-firstname] or whatever. Is this possibly a side-effect of missing some code in my cc processing module? Or is there somewhere else I should look? If it is the cc processing, I'd welcome anyone who could point me to equivalent code in a default cc module.

2. This is a dumb little thing, but I'm curious. I've looked through a couple of existing modules, but my brain's really threatening to implode and I don't want to sort through them all. Do any of the cc systems require an invoice number as a parameter? Ours does, and I'm trying to determine the best way to generate this.

Thanks again! Almost there!!