 - PHASE II: For the patients in the preoperative component, only a scan showing progression is required; for this scan only stable steroids are not required; following surgery, a scan should be done no later than 96 hours or at least 4 weeks from surgery and on a steroid dose that is stable or decreasing; treatment with OSI-774 erlotinib and CCI-779 temsirolimus post-operatively should start no later than 14 days after the scan; if the 96-hour scan is more than 14 days before treatment is initiated, the scan needs to be repeated on a stable or decreasing steroid dose 