Well I've been recently having too many errors while playing Team Fortress 2, commonly because of this integrated card I've got (desktop). As a result, I wanna buy a decent Video Card, and I know to do so first I must know which extension slot I've got. I opened my CPU Case and found I've got 2 long white bars, both saying ''PCI'' at the bottom of each of them, then 1 little black bar saying ''pciex1'' at its bottom, and then a long black bar, above of it saying ''PCI Express'' but it didn't said anything about x1, x4, x16 etc... But firstly, I want to be 100% sure I can in some way insert a PCI Express video card, so here's a screenshot of my slots: Well in fact there are 2 white long bars (PCI), 1 short black bar (PCIe x1) and then 1 long black bar (above saying ''PCI Express) So with this I can be sure I've got a PCIe slot for a video card? Please reply. Oh, forgot to mention that: My specs are: Windows XP SP3 760MB RAM Intel™ Pentium 4 Dual CPU 3.0Ghz Motherboard model: • Manufacturer & Model: IBM • Chipset Intel i915P/i915G Rev. B1 • Southbridge Intel 82801FV (ICH6) • LPCIO NS PC8374L With all that above; which ATI Radeon HD 4000 Series (4350, 4550 etc...) can I buy? Please tell me, I need a 4000 Series please ! Thanks.