Dear flair7777,
So far as I know, to change registration in Ebay.com, you just Register with Ebay.com with the same user ID and password and you will instantly register yourself with Ebay.com. Secondly, to get your bills in US dollars, after Registering with Ebay.com, click Site Map, you will find Seller Account, and one icon change currency. You click on that and the billing currency will be changed. I hope this may solve your problem. Please let us know if you are successfully done so that we are also get confirmed. Ashok Agarwal Proprietor
Sitare_Jewels
Siliguri, Darjeeling INDIA