VisualD phobos link error, only when I implement a few simple classes on top of a hello world program.

[Enjoys Math via Digitalmars-d-learn]

What is this phobos crap?

I've tried renaming all my modules with an _ (underscore) in case 
they were colliding with phobos.

------ Build started: Project: BasicSimpleTypeTheoryApp, 
Configuration: Debug Win32 ------
Building Win32\Debug\BasicSimpleTypeTheoryApp.exe...
LINK : fatal error LNK1104: cannot open file 'phobos32mscoff.lib'
Building Win32\Debug\BasicSimpleTypeTheoryApp.exe failed!

All I have is two abstract classes essentially with 2 1-line 
methods, nothing out-of-the ordinary.

Thanks.