title: Can't find System.Workflow assembly in .NET. How do I get it?
body: <p>I've installed a complete SharePoint Server (MOSS) 2007 on my dev box + the latest Visual Studio (SP1) + the latest full Windows SDK.  According to the Windows Workflow Foundation page <a href="http://msdn.microsoft.com/en-us/netframework/dd980558.aspx" rel="nofollow noreferrer">http://msdn.microsoft.com/en-us/netframework/dd980558.aspx</a>, that is all I should need to do to be able program against the .NET Workflow APIs.</p>
  
  <p>And yet, all of the projects I build from the standard Workflow templates refer to the assembly System.Workflow and VS complains that that assembly isn't available.  I've searched around on my hard drive, and I can't find a file for that assembly anywhere obvious on my disk.</p>
  
  <p>I do find some files that look like they might be that assembly, but they're buried down in wacky places below particular applications like they are runtime support for that app.  They don't seem to be what I'm supposed to point VS at.</p>
  
  <p>Can anyone tell me how to fix this problem?  Do I need to install something else that I have yet to come across?  Are these assemblies already on my system and I just need to know how to point VS at them?  I'm stumped.</p>
  
  <p>BTW: I was going to try uninstalling and reinstalling VS, but the installer fails with some very cryptic error message when I try to uninstall.</p>
  
  <p>TIA for any help, and Happy Holidays to all!!!</p>