Problem calling dll from vb in win98 but not win95

Hi all

i've a problem I know you should know. I call a dll from a vb.exe, in win95 it works 100% ,but if I do the call in win98 it give error 49 Bad DLL calling convention.

Any idea were I can start look ,or have you got a answer already.

Thanks.

Christo

What kind of dll file is it? And how do you make your calles today?