Technology Forum

hi i dont no a lot of computer and im trying to find one for my computer.my computer is a sony PCV-RX755 and the mother board name is P4S266-VX.i just bought a EVGA e-geforce 6200 AGP because i read that it was compatible with my computer but when i opened my computer i saw that the slots where the video card goes and the one from the video card were different. the video card has 3 little lines and my computer has a long one then a litlle one, but i also found in some forums here http://forums.guru3d.com/showthread.php?t=261052that some people have the same mother board as me and also the video card i just bought and they were able to put it in the computer or maybe im installing it wrongplz plz can some one tell me if bought the wrong video card or if im installing it wrong?thanx for your time