I have an older HP desktop with integrated graphics. I recently bought a non-powered vga splitter to run to my Insignia LCD television. When I hooked it up, the picture on the TV looks absolutely perfect. However as soon as I plugged the TV cable in... the picture on my 15 inch CTX monitor dimmed significantly. The second you unplug the cable to the TV, the monitor brightens up. What is gonna be my cheapest alternative to not losing my brightness on my monitor?? A powered splitter?? Switch?? Or can I go the route of a video card with 2 VGA outputs??