Drop Down box into different autoresponder campaigns

I wonder if someone could help me with the following problem. On the page [url]www.buffettsecretsrevealed.com[/url] there is a form that passes visitor information (name, email, country) to a “campaign” in [url]www.proautoresponder.com.[/url]

The key line of the form is:
<input type=”hidden” name=”campaign” value=”buffettsecretsrevealed”>
This says that the information is placed in the database called buffettsecretsrevealed within ProAutoresponder.

What I would like is to have three campaigns in ProAutoresponder. Let us call them bsraus, bsrusa and bsroth.

If the visitor selects the country “Australia”, then the above line should be: <input type=”hidden” name=”campaign” value=”bsraus”>

If the visitor selects the country “USA” or “Canada”, then the above line should be: <input type=”hidden” name=”campaign” value=”bsrusa”>

If the visitor selects anything else, then the above line should be: <input type=”hidden” name=”campaign” value=”bsroth”>

Then when the visitor clicks on the submit button, the information is placed into the correct database in ProAutoresponder.

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