Installing Windows Server 2008 in VirtualBox

Today I installed a beta Windows Server 2008 onto a virtual machine on my Mac using VirtualBox. After some trial and error, the following settings seem to have allowed it to work:

System:
OS Type: Windows 7 (64 bit)
Base Memory: 500 MB
Processors: 1
VT-x/AMD-V: Enabled
Nested Paging: Enabled

Display:
Video Memory: 12MB
3D Acceleration: Enabled

Blocking spam from Yahoo! Personals

I get approximately 10 messages a day from Yahoo! Personals, which pass through spamassassin because they're DKIM signed. As far as I can tell, there's no way to opt out on Yahoo's end, so I had to resort to blocking every message with their telltale subject. Here's the rule:

header SUBJECT_YAHOO_PERSONALS Subject =~ /Dating 101: Reviving Your Relationship/i
score SUBJECT_YAHOO_PERSONALS 20.0