I have unpacked Opencl-ati plugin pack properly in my dolphin folder, however when I launch dolphin the GPU plugins don't appear anymore, on software renderer is available.
Am I missing something?
Am I missing something?

MS Windows XP Professional SP3
DirectX 9.0c 4.09.00.0904
Intel Core 2 Quad Q6600, 3200 MHz
Corsair Dominator 2x 2GB DDR2-800 DDR2 SDRAM
ATI Radeon HD 4870 X2 (2x 1024 MB)
Iiyama ProLite B2403WS (Digital) [24" LCD]
Creative CA20K1 X-Fi Xtreme Fidelity Audio Processor
DirectX 9.0c 4.09.00.0904
Intel Core 2 Quad Q6600, 3200 MHz
Corsair Dominator 2x 2GB DDR2-800 DDR2 SDRAM
ATI Radeon HD 4870 X2 (2x 1024 MB)
Iiyama ProLite B2403WS (Digital) [24" LCD]
Creative CA20K1 X-Fi Xtreme Fidelity Audio Processor