If you have web parts installed on that V2 SharePoint…
I finally installed the .NET 3.5 family update on my SBS 2003 at the office. – THE OFFICIAL BLOG OF THE SBS “DIVA”:
BTW the reason that the server survived is due to this:
Error message when you install the .NET Framework 3.5 SP1 on a computer that is running Windows SharePoint Services 2.0: “A Web Part or Web Form Control on this Web Part Page cannot be displayed or imported”:
I had no web parts on that Sharepoint v2 on my SBS 2003. If I had, the resolution is not satisfying to me (and in fact I’m asking folks about what should we do if we are in this pickle). So bottom line be prepared, understand the side effects of some of these .NET and have a good backup.