>>>>>Off the top of my head I don't know what the structure of a variant array looks like, but someone else probably does.
>>>>
>>>>hmm. Who?
>>>>
>>>
>>>Someone who doesn't believe that VB is the root of all evil...
>>
>>Not me then...
>>
>>I can get the C declarations (will take some digging) will that help you to help me?
>
>Yep - I have a bit (read: lots) better knowledge of what C interfaces look like.

double THILINKAGE THIbyld(const double *coupon,
int num coupon,
const THIDATE *maturity,
int num maturity,
THIDATE settle,
double price, etc (lists a lot of optional parameters)

Not sure if this is it or not, to be honest. This was in a pdf file deep in the "C" directory of the library I am evaluating. Does this tell you anything?