how to upgrade from 10.5.8

Upgrade to 10.5.8 to what? If you want to go from 10.5.8 (Leopard) to Snow Leopard first you need to determine if your machine can be upgraded to SL (currently 10.6.8) and beyond. To upgrade to SL 10.6.8 do the following. Call the on-line Apple Store (Apple's website) and order Snow Leopard, when it arrives follow the instructions that come with the DVD. Once SL is installed navigate to the 10.6.8 Update Combo and download and install following the on-screen instructions. Next run Software Update and install all suggested updates for your system. This will get it current. If you want to upgrade to Mountain Lion (10.8.2) after installing 10.6.8 and all it's updates open the Mac App Store and buy and install ML and run Software Update again. The system requirements for ML are:

Hi please can you advise me on how to upgrad the following and how in simple terms to do so as Im no geek?

OS X 10.5.8

Model Name: iMac

Model Identifier: iMac7,1

Processor Name: Intel Core 2 Duo

Processor Speed: 2 GHz

Number Of Processors: 1

Total Number Of Cores: 2

L2 Cache: 4 MB

Memory: 4 GB

Bus Speed: 800 MHz

Boot ROM Version: IM71.007A.B03

SMC Version (system): 1.20f4

Read my last post, it cannot get more explicit.

could you please let me know how we can confirm how much memory space we have on our 2.8 ghz intel core 2 duo 2 gb 800mhz ddr2 sdram. also in your above answer you say you need 2 gb memory but have 8 gb available

as you may realise not good with computers.

we are trying to upgrade from 10.5.8 to snow leopard and then to mountain lion.

thankyou for your time.

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