I am using Windows Vista Home Premium and Sharepoint 2007, I have many websites that I run from a zip drive and do not store them on the computer, for security reasons, However, Sharepoint does not seem to like it, if I edit on the GUI page, and crashes if I edit on the code page, things are OK. Can anyone help as sometimes I would like to edit on the main page instead of the code.

Did you install MOSS 2007 recently on your Vista PC? Is your SharePoint 2007 patched up with Service Pack 2?