Upgrade this iMac to the latest version of Os X? I have an iMac running 10.5.8. How well/badly do you think it would work if I upgrade to the most recent version of MacOsX (and can I leap there in one go, or do I need to first upgrade to an intermediate version of the operating system)?

Here is what System Profiler tells me:

   - Model Name: iMac
   - Model Identifier: iMac5,2
   - Processor Name: Intel Core 2 Duo
   - Processor Speed: 1.83 GHz
   - Number Of Processors: 1
   - Total Number Of Cores: 2
   - L2 Cache: 2 MB
   - Memory: 2 GB
   - Bus Speed: 667 MHz
   - Boot ROM Version: IM52.0090.B09
   - SMC Version (system): 1.6f0
   - Serial Number (system): W86450CMWV7
   - Hardware UUID: 00000000-0000-1000-8000-0016CBA120C3


Thanks for your help.
From Apple's site:


  If you’re running OS X Leopard and would like to upgrade to OS X Mountain Lion, first you’ll need to upgrade to OS X Snow Leopard. You can purchase OS X Snow Leopard here.