Windows 2008 enterprise and virtual servers installation and licensing help

Hello we are building our first set of virtual servers and we have chosen to run microsoft hyper v that is included with windows 2008 server entrprise edition.

I have the following questions all related to the installation
Obviously I load window 2008 enterprise as the host operating system however I am confused by what I load when I install the 4 virtual machines.   Do I load them all with enterprise versions as well?   Historically there are more features in the enterprise editions  
When I purchase my CAL's do I purchase them for each virutal machine seperately?  Or does an enterpise CAL cover all the virtual machines?

Thanks in advance
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Zoldy2000Asked:
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c_a_n_o_nCommented:
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Zoldy2000Author Commented:
Okay but its say windows 2008 enterprise license covers 4 virtual machines....   so are you saying cust for CAL's
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Darius GhassemCommented:
A Windows 2008 Enterprise server comes with one physical install license and four virtual installs all on the same server. You don't have to purchase more licenses but you can install Enterprise or Standard.

http://www.microsoft.com/presspass/press/2007/nov07/11-12HyperVPR.mspx
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Microsoft Virtual Server

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