Ajax? Code Installed For Auction Site to auto update bids

I am starting up a new penny auction site. Everything is up and running but I have a problem with the bidders names and bid amounts not auto updating correctly. The person who installed the script for me said that I need Ajax? code installed on the site. I also have another small problem with my newsletter subject line not filling in any subject (everything i write in there disappears when i send it out) which results in a (no subject) email being sent out and the emails go right into their spam folder.