Never mind...I went to justanswer.com and got an answer from a real estate attorney.

Answer
April 19 8:03 p.m. (7 minutes and 40 seconds later) [SIZE=+1]
ACCEPTED[/SIZE]

Your wife does not have to be on the deed to your house. However, in the event of a divorce, the marital property rules will kick in and she would be entitled to a 1/2 interest. So long as you stay married, everything will be fine. Also, she does not have to be on the bank note if you're the only one on the deed. In fact, it's probably a good idea to keep her off of the deed and note for credit reasons since she does have a foreclosure. This will also keep any of her creditors from seeking a deficiency against anything you own. However, if you decided to put your new wife on the deed and mortgage, the creditor cannot put a lien on your new home, or if they did, it would be a waste of time as it would be secondary to the first mortgage and not collectible against your house. The creditor could seek a deficiency and record it on the judgment roll in your county and her credit report.
I think your best bet and safest move is to keep your wife off of any deeds and mortgages for these credit reasons. This way, her credit history is of no consequence.