API Signature Question

I have read all the other threads, so I must be 'doing it wrong".

* I am attempting to activate my PayPal button add in and when it comes to API Signature. I am a bit baffled.

I went to paypal and clicked certificate to download and it is quite the document. I attempted to copy and pasted the certificate, but the ap on EW4 for the paypal addin is rather stubborn and won't allow me to paste it.
i called Paypal and they said that this was the correct doo hickey but I wouldn't wish it on my worst enemy to type all this in by hand.

* So.. question. Is it because my new website isn't uploaded yet so it can't see the certificate?
Wouldn't the username and password direct it to the certificate, since it has been sitting on paypal since 2007?

Should I be looking for something else? Please assist. I have over 3000+ objects I am going to have to put together and must get started asap.

Also i saw on another thread that someone couldn't post more than 100 buttons.. I will need to know how to update whatever to accomplish my goal of 3000+.

I am using EW4 on Windows 7.
thanks
VERA