[ic] External Orders

[Orko]

Our company is trying to offer purchases straight from our software, and
I have been trying to figure out a way to deliver the order through
Interchange, giving the customer the experience of:

1) click "purchase" in the software
2) fill out the order form in the software, including CC information
3) click submit, which posts to our secure catalog, generating the order
  - If the order goes through, display a receipt
  - if not, display the checkout page with the errors

I already have everything set up for #3 through the web site, but am
having trouble with the variables that I am supposed to post (and
where?) from an offline page, so to speak.  I evidently can't (?) post
directly to process.html, or checkout.html, through an outside source..
So I'm assuming I'm going to have to generate a special page that takes
the information posted from the software and posts it to process.html.

I don't want the software to have to know anything more about the
product other than it's SKU.  So the variables I would like to post to
the cart would be something like:

<INPUT TYPE=hidden NAME=mv_doit      VALUE=submit>
<INPUT TYPE=hidden NAME=mv_orderpage VALUE="ord/checkout">
<INPUT TYPE=hidden NAME=mv_checkout  VALUE="ord/checkout">
<INPUT TYPE=hidden NAME=mv_successpage  VALUE="ord/checkout">
<INPUT TYPE=hidden NAME=mv_failpage  VALUE="submit_error">

<input type=hidden name=email_copy value=1>
<input type=hidden name=mv_form_profile value=remap>
<input type=hidden name=payment_method value="credit">

user entry fields:
==================
email
name
phone_day
mv_credit_card_number
mv_credit_card_exp_month
mv_credit_card_exp_year
country
item_to_purchase (SKU)

Does anyone have experience with a one page checkout, and/or offline
page ordering?  I would greatly appreciate any tips/suggestions you
might have.

Thanks,

-- orko