windows 8 release preiview on virtual box

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http://askubuntu.com – i have a ubuntu 10.04 and windows 7 installed on computer. Now i would like to try windows 8 on virtual box OSE. I have a windows 8 release preview iso disk in a pendrive and added ide primary slave as it IDE Primary Slave (CD/DVD): Windows8-ReleasePreview-32bit-English.iso (1.64 GB) This is my windows 8 virtual box settings. http://i.stack.imgur.com/bdWbW.png And what i see when i start windows 8 is http://i.stack.imgur.com/Bqokr.png what is the problem? my system ram is 2.00 gb where 1.85 is usable? How can i fix this problem (HowTos)