worldpay XML configure in version 1.4.9.1

Hi all,

I have just purchased the worldpay XML module from a user on this board (sorry can't remember your name)

In the admin it is asking for

merchant Id
Mercent password id:

Can anyone please advise what information is this?
I do have a worldpay account, but they don't even know what to give??

Please advise??

Thank you

I guess Merchant ID would be "Merchant Code"
And the merchant password