Graphics card for minecraft?

Ok so I was starting to play minecraft and it said "old graphics card detected; this may prevent playing in the future as OpenGL 2.0 will be required" so what does that mean? And where do you get a graphics card? I really want to play and if I try to connect it doesn't even load it just takes like 10000099 hours. What do I need to do? I have an acer monitor and a Lenovo H210 (57088851) series computer (not laptop) the processor is an intel pentinum dual core processor E5200 and graphics: Intel GMA3100 where do I get a new one and how do I install it? Can I do something else? I wanna play and it's not letting me

Ahh, graphics card wise, I don't think you would know how to install it if you don't even know what it is. Essentially it's like a plugin for your computer that allows it to process/do certain things better and faster. You currently have Integrated graphics, good 'nuff for Minecraft. Try just getting a new computer. Lenovo's G series laptops are actually pretty well equipped for MC, but if you think you'll be playing some graphics-intensive games (CoD, BF4) then try going for the Lenovo Y510p or Lenovo Y410p (although the Y50 and Y40 (updated versions) are coming out sometime in May).