Hello friends, I am New to Bitcoin and I am facing serious problems. I installed the guiminer software and later when I opened I got A warning message saying the OPen CL is not installed. I ignored it and when I clicked start mining an error message showed at the bottom of the guiminer saying that the dll file could not load.
I have 4GB RAM 512 MB graphics card NVIDIA and the OS is Windows XP
Kindly advise with step by step as I do not know much about bitcoin

Thnks regards