Hello, I currently have a CQ2740EA Desktop. The current motherboard has no PCI ports. I wanted to upgrade my graphics card to a XFX Radeon HD 6850. I need to know what to do and how to do it... Current PC: http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03316283&lang=en&cc=us&taskId=135&contentType=SupportFAQ&prodSeriesId=5156350&prodTypeId=12454