Configure a small website in .html

I recently bought this Halloween website, that just needs to be configured with my payment details. I'm not a html Whizz, so I need some help here, in doing this. I didn't find any instructions with it and the seller/support people do not seem to reply to emails? Since Halloween is nearly here, I'd like to get this up and running asap. I can obviously supply all the payment details needed here. Speed is crucial for this little job, if I'm to get anything back for my purchase? I can put it up on my hosting, once it's ready for use?