I'm building my first gaming computer. I need help figuring out a possible compatibility problem between my MSI K9A2 Platinum motherboard and my ATI Radeon HD 5870 video card. There are 2 ports on the video card HDMI and another one that I don't know about. I hooked my computer up to my plasma tv via HDMI cable and still couldn't get a picture. Am wondering if that other port has something to do with it or am I missing something. Any help would be appreciated, thank you.