my dad is fighting, he is my hero!

Hello,
My father was diagnosed in June with stage iv lung cancer. We have tried the experimental drug Iressa, and that did not work. He is now back on chemo, with great hope it will keep his lung and liver in check. Does anyone out there know of anything experimental that is working? Also, He needs some cheering up. He would never admit to becoming depressed, but I can see it. If anyone would email him and lift his spirits I would be forever greatful. RAM624@willard-oh.com. He is only 56 with 4 daughters and 2 grandchildren, with one on the way. I hate seeing him suffer and in pain. He is having weird pains, shoulder, his foot, leg, etc. Is this common? please let me know and email with some cheer.
BEating cancer,
sherri