Improving our credit

My husband came home today with the mail in his hand like he always does but he had a store catalog in his hand and I was curious to find out what kind of catalog he had. Apparently the front of the catalog said that my husband was pre-approved for credit so I decided to browse thru the catalog and look at the electronics pages since we have been considering buying a new TV but we don't know whether to buy plasma tvs or the LCD TVs. It looks like they both have a beautiful picture and I cant really tell the difference between the two. Tough decision! This will help improve our credit rating.