Server 2008 on MSDN - Volume Keys Only?

SO when I go to request a key for Server 2008, it only gives me a volume license key for it.

Ya, know how*it's one of those products at the very bottom of the page...

So we can only use Volume licenses for Server 2008?

How do I enter the license? The page talks about MAK files... can't I just enter the serial?

<blockquote>.<b>MSDN wrote:</b><i>
Volume License Key. To install specific licensed products you will need to use a Volume License Key (VLK). *This VLK is issued to your company for your exclusive use for each specific license purchase. *VLKs must be used with the appropriate Volume License media. *You agree to use your best efforts to keep a secure record of this product key including not disclosing this product key to any unauthorized third party.* You may see VLKs for older product versions; this is to support downgrade rights under the license agreement where customers can acquire the latest version of a product and use an older version.
</i>[/quote]

<b>??? :s</b>