HELP : MSVC 4.0 DLL not works with Delphi 2.01

I have made a DLL under Microsoft Visual C++ 4 and it don't works on
Delphi 2.01 applications !!!!
The function on DLL works fine, but when returns to Delphi aplication
and it changes any properties or call any method from a VCL, it craches

Thanks for help...

Alexandre Hirohashi