Hello! My computer has a PCIE 2.0 slot for the graphics card. I know this because I checked on Nvidia's web site and under the GTS 240 it said PCIE 2.0. I then checked Best Buy and the graphics card I wanted to get needs a PCIE 2.0 x16 slot. Will my PCIE 2.0 slot work with the PCIE 2.0 x16? If anyone can explain this to me I would really appreciate it.