I just wanted to store this link in a relevant place, as it might actually be useful "some day" when we're getting platform-independent.
This is necessary to get ASIO working on Win32 compilers that are not Visual C++. http://www.rossbencina.com/code/iasio-thiscall-resolver
Tobybear also has a tutorial to write a vst with delphi, not a host but still this may be useful to the developers.
http://www.tobybear.de/d_template.html