how to enable opengl?

[Omnibomb]

ive read some threads about ppl gaving gfx issues with a few games and were told to enable opengl ive looked through dolphin and i can find an option to enable it can someone tell me what im doing wrong/what im missing?
EDIT: ive looked at a few screenshots which show a plugins area in configs but that area does not exist in the current release

[LordVador]

Just go into Graphics/General and change your backend

[Omnibomb]

hmm i just went to try that and the drop down menu for back end was greyed out

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Operating System: Windows 7 32 bit
Processor/CPU: Pentium® Dual-Core CP T4300 @ 2.10 GHz 2.09 HGz
Video Card/GPU: Mobile Intel® 45 Express chipset family
Memory/RAM: 4.00 GB (3.46 usable)
Dolphin Revision Currently Using: dolphin 3.0 325

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Operating System: Windows 7 32 bit
Processor/CPU: Pentium® Dual-Core CP T4300 @ 2.10 GHz 2.09 HGz
Video Card/GPU: Mobile Intel® 45 Express chipset family
Memory/RAM: 4.00 GB (3.46 usable)
Dolphin Revision Currently Using: dolphin 3.0 325

[dannzen]

try it before starting a game...

[LordVador]

Just to be sure you didn't try changing your backend while playing? And which revision did you use?

[Omnibomb]

doh im a moron sorry

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hmm i tried changing my backen to opengl and now whenever i try to start a game dolphin stops working

[LordVador]

Haha don't apologize and enjoy

[Omnibomb]

i closed the game and changed the back end to opengl then the screen went grey and dolphin stopped working and crashed

[LordVador]

Which game are you trying to play?

[Omnibomb]

final fantasy iv the after years