Email Replies

[lulah]

Hi Guys and Gals,
Yet another newbie with a little help. I have a done a search of the forums with email topics but havent found what I am looking for.
I wanted to know if oscommerce has a code somewhere that can be modified so after a purchase has been made, It can automatically send an email for each different type of payment type made.
I get the extra email sent to my address, but I am not able to send an email to the purchaser from there unless it is manually.
If that is not possible, is there a way that I can set an autoresponder up to beable to reply with alternative payment arrangements. I have set up an option for direct deposit into my account, but I dont want that to been shown on the site.
thanks in advance
Kylie