Thank you for your question.
If you filed a joint return with your deceased spouse, you can not then also file a joint return with your new spouse. Your new spouse can not include you as a dependent on her return for 2008.
However, if you mean that you filed a married seperate return for your deceased spouse:
, as long as you did not also include yourself as a dependent on your deceases spouse return, then your current joint return will not be affected.
Thank you for getting back to me.
Then the return you filed for your deceased spouse in 2008, will not affect your joint reutnr with your new spouse. it will not reduce you refund.