tracking codes

[jamo]

hiya

i have been asked by a third party to add some tracking codes to the checkout.thankyou page.

Not really sure whats the best way to get the data that they need.

I need to get;

1. total sale price
2. order id
3. product names (if more than 1 item purchased)

Are these stored in any sessions or are any tables called on that page so that i can piggy back on those to grab the info?

any help is much appreciated
cheers
jamo