Identification: Unkown sick house plant

Another plant that I have aquired and know nothing about. The leaves have quite a few dead spot all over. However there are new sprout occuring. Someone please tell me the name and help me with tips on how to fix the leaves.

Thank You,
Bradley

 

Zamioculcas zamiifolia, aka ZZ Plant.

Here is excellent information:

http://www.exoticrainforest.com/Zamioculcas zamiifolia pc.html

 

Thank you very much.. Any Ideas on my previous post about the tree?