I recently did my first build. I had to rig the PSU to fit inside the case but that was the last piece of hardware I needed. I switched out the okia 400 watt for the VX 550 Watt Corsair, added 2GB of RAM, and plugged in the 8800GT OC video card since I last ran the computer. I was previously getting video with the onboard vga of the motherboard. Now I am not getting a signal through that, the dvi of the 8800GT, or the dvi to vga adapter. Did I do something wrong? Do I need to install windows and the drivers before installing the 8800?