The target emulator is configurable, as usual, in File -> Preferences -> Transfer.
I've done some testing on my old Athlon 1 GHz running Win ME, communication with both TIEmu and VTI seemed to work correctly. TIEmu+GDB is SLOOOOOOOW on that old OS...
But please help testing nevertheless
The patch series is available at:
http://tict.ticalc.org/misc/0001-Delphi-IDE-1-3-add-back-VTI-support-along-with-a.patch
http://tict.ticalc.org/misc/0002-Delphi-IDE-2-3-add-back-VTI-support-along-with-a.patch
http://tict.ticalc.org/misc/0003-Delphi-IDE-3-3-add-back-VTI-support-along-with-a.patch
I'll probably fold it into two patches before committing.
Thanks in advance for testing
(The executable was compiled with Delphi 7, so you may experience quirks under Vista. Please report them as if they were IDE bugs, it may be that I screwed up
).