Hi guys, I posted this in the Apple forums but this board is always way more helpful. I just bought a new 23" Cinema Display. Plugged it in per the instructions, the computer turned on but the monitor stays black. The power light is on, but no picture. I read there may be some power brick problems but could it be my video card is not good enough? On the Apple store page it says the 23": "Requires Power Mac G4 or G5 with NVIDIA graphics or ATI Radeon 7500 graphics or better" I have a 64MB ATI card that came standard with my comp when I bought it, is this good enough? here are the specs from the system profiler: ATY,RV350: Type: display Bus: AGP Slot: SLOT-1 VRAM (Total): 64 MB Vendor: ATI (0x1002) Device ID: 0x4150 Revision ID: 0x0000 ROM Revision: 113-A13601-126 Thanks for any help!