what is it that you are trying to "Configure"
Once those three screws at the bottom are undone, they are captive bolts and should not be removed, you have access to everything that is inside the machine. If those bolts are removed, it is usually very difficult to replace them correctly.
You cannot change the processor, there is no room for another drive (optical or hard), RAM does not require the dismantling of the machine and you won't find a graphics card to fit.
What is it that you want to change about the configuration?
P
I've only had my iMac for a while and I'm already regretting the configuration. Does anyone know what you have access to once you take out the screws on the bottom or know of any tutorials? Thanks

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