call library node - using a structure with dll

Hi folks.

I was hoping to recieve some help or advice on solving this problem I am having in labview:

Some background info - I am trying to use the 'call library node' to allow me to use a .dll to allow for control of a remote power supply over RS-232.

I have been doing fine up till now, however I am now trying to use the following:

int TC4GetFnBlockSettings(struct T_FnBlock *p_fnblock, unsigned int type)

int TC4SetFnBlockSettings(struct T_FnBlock *p_fnblock, unsigned int type)

where

struct T_FnBlock

{

unsigned int BaseFunction;

double Amplitude;

double Offset;

double Symmetry;

double Frequency;

int BipolarAmplitude;

int RectifyAmplitude;

double ExpTimeConstant;

unsigned int NumPeriods;

unsigned int UserDefAmplitude;

unsigned int UserDefTimePrescaler;

double UserDefPeriodLength;

unsigned int UserDefNumPoints;

unsigned int InactiveLevelType;

double InactiveLevel;

unsigned int AAPInputType;

unsigned int AAPInputFilterKoeff;

unsigned int AAPFlags;

double AAPInputScaling;};  

Obviously there is no such thing as a structure in Labview; I had hoped to use a cluster in it's place however the CLN does not allow for input or output of a cluster.

Any help would be appreciated!

Thanks