SEFU and multiple currencies? HTML or PHP pages?

Hi Guys,

I want to change all my URLS to this SEFU mod so I can get better rankings in google and the search engines, a few questions though:

1. My site has multiple currencies, most notably AUD and USD, also I use s_mack's currency contribution so that it selects the correct currency based on IP address.
   I am worried that a static HTML page won't be able to do this? Will it just have a static price on the page or can it still adjust for currency?
   So if an Australian customer goes to my HTML product page will they see the price in AUD, if a US customer goes to my HTML product page will they see the price in USD? That is currently what happens?

Also some sites I have seen have SEFU pages with the product name in the URL but the pages end in .php instead of .html, would this help?

2. When I use the easypopulate and froogle export feeders will they export the current urls e.g.main_page=product_info&products_id=681 or the SEFU url product-name-here.html? Also when customers click the links on my site will the links be the original url I have now or the SEFU url with the name?
   Will these harm my ability to track where customers are clicking and where they come from?

regards,
Dave

P.S. also can anyone point me to the best sefu mod for zen 1.3.6??