My computer doesn't have opencl, but if I replaced the graphics card...?

[krud14]

Hi, I have a really crappy computer and tried mining on it with a gpuminer and it said I didn't have either opencl. The graphics card is integrated, but I found out that I can use another one with the pci-e slot. I was wondering if I bought a new graphics card to use and disable the integrated one, how I can get opencl to work so I can mine with it?