Error LNK2019, using IVI C

[geodo]

My software compiled with Microsoft VS .NET 2003 give me the next error:

Example1 error LNK2019: símbolo externo _IviRfSigGen_ConfigureLFGenerator sin resolver al que se hace referencia en la función _setupAnalogMod

I'm trying to change my program to get interchangeablity with IVI-C

I change "Ag"--->"Ivi" in my functions

and i include

#include "AgRfSigGen.h"  ---->  #include "IviRfSigGen.h"

and i change in my linker AgRfSigGen.lib ----> IviRfSigGen.lib

and  i use a logical name

what is the problem???

Thanks

[fdsafsafsaf]

?????