Dear crazylilkelly,
So sorry to hear your news.
One of my closest friends was diagnosed wiht stage IV lung ca. in February and it was of the worse forms to have. Unfortunately the prognosis is usually pretty poor particularly if it is small cell, mainly due to the fact that it is usually not detected until it is widespread.
On the upside, there are many treatments that can 'manage' the condition such as radiotherapy and chemo which can significantly improve the quality of life for the individual but the curative rates are pretty poor unless it is detected in the early stages.
Have a look through the website that I have attached, which I hope you might find helpful
http://www.cancerbackup.org.uk/Home