Brain Tumor

My father in law started forgetting names not making sense in some of his statements after his mother died on May 8,2008. After several doctors visits we were told by phone on Friday May 30th, that he had a brain tumor that is most likely malignant in the left temple area. On Monday we met with the doctor who says its approx 4 inches long and inoperable. No biopsy and no surgery.
Now he has gotten so bad he doesnt understand what the doctor is saying. He is getting furious that we continually take him to doctors when there is "nothing wrong with me". He is 66 and very active. but now he is not allowed to drive and we have a hard time getting him to go with us. There were no symptoms before the memory loss and he has gotten so bad now he understands nothing. Were and how do I get him the best possible care available. This doctor seems to think its hopeless. Im in roanoke Va. Is there any way we can get a doctor to see the MRI's and the CAT scans without having to drag him along.