Opening a merchant account in eBay

Hello. I just opened a merchant account to use on eBay. It's through merchantsinc I have already linked it to my eBay account but I have a few questions. Hopefully someone that has experience with them can help me.
*In the products tab it says I need to import my products to the shopping cart. Do I have to upload every item I want to sell?
*How do I put items up for auction on ebay? Through the shopping cart or do I just normally list like I would on eBay?
* Is there a way for me to create a 'Click here for payment' button to use on my auctions? How do I do that?
*eBay is telling me that in order for me to take credit cards through a merchant account I have to send them my last merchant account statement. I don't have one so how can I send them that? Is that standard procedure?
* The shopping cart gives you a code to paste on your auctions for payment. Any suggestions on where to put it? Like at the beginning of the auction or at the end & can someone show me an example of what it should look like?

Thanks for all your anticipated input.

* The shopping cart gives you a code to paste on your auctions for payment. Any suggestions on where to put it? Like at the beginning of the auction or at the end & can someone show me an example of what it should look like?

Thanks for all your anticipated input.

Thanks for all your anticipated input.