Here are the in my opinion most interesting SharePoint 2007 resources in April 2009.

With every link comes a short description of the content available.

This month is about SharePoint 2007 in general and WCMS as well as virtualization.

SharePoint 2007 WCMS

• Locking Down SharePoint Designer
  Although this site is dated November 2008 I just found it this month… It’s about the permissions required for a user to access and edit a SharePoint 2007 website using SharePoint Designer 2007.
• How to create a browser cache save URL to a javascript or css file in SharePoint
  If you need to make an own browser cache save URL you should read this article provided by Stefan Gossner.
• Subfolders in a Pages library not supported
  Yes this is not the supported way for creating a hierarchy with SharePoint 2007 WCMS.
• Configuring and Deploying Anonymous Publishing Sites for SharePoint Server 2007
  Andrew Connell has written again an interesting article regarding SharePoint 2007 WCMS.

Virtualization (Hyper-V)

• Hyper-V Security Guide
  If you need to ensure security with Hyper-V you should read this paper as it covers hardening Hyper-V, delegating virtual machine management and protecting virtual machines. 
• Where are my snapshot files? [Hyper-V]
• What happens when I delete a snapshot? [Hyper-V]
• What happens when a snapshot is being merged? [Hyper-V]
• Why does it take so long to delete a virtual machine with snapshots? [Hyper-V]
• What happens if I start a virtual machine that is merging snapshot files? [Hyper-V]
• Why is my virtual machine "Paused-Critical"? [Hyper-V]
• Should virtual machine snapshots be used in production? [Hyper-V]
  Ben has released a great series of articles regarding Hyper-V and snapshots. Don’t miss this if you are into virtualization!

Hope you like them.