[aldacron]

Reading this thread in the newsgroup, I wondered how difficult it would be to add a new project option: integrate objconv into the build process to convert each object file, then use Visual Studio's link instead of optlink to build the exe. Seems like it would be a good workaround for people like the OP, coming to D from existing VS-based toolchains. At least until DMD gets COFF support built-in.
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The One With D | The One With Aldacron | D Bits

[sagitario]

Last time I tried (maybe a year ago), conversion was not very successful, especially when it gets to debug information. Did you try it out and see how well it works?

I think it should not be too hard to add COFF support to DMD especially because the debug info can be very similar to the stuff written to OMF at the moment, so the efforts are better invested there.