I have an HP Pavilion a1600n desktop. Motherboard is A8mzn-LA (Nodus M3). Current graphics card is GeForce 6150 LE. Wanting to upgrade, but looking for something not to expensive. Was looking at JATON Video-348PCI-256TWIN GeForce 6200 256MB 64-bit DDR2 PCI Video Card on newegg.com. Not sure if this would be much of an upgrade from my current GPU? Otherwise, would getting a PCI to PCI Express adapter be the smarter thing to do?