PSpice; Simple ADC/DAC model for DSP modelling

Hi

I would like to simulate a FIR filter in Orcad PSpice and the method I have found is to:

1 Add a sample/hold circuit 2 Add a ADC 3 Feed ADC directly to DAC 4 Use some transmission lines to get the delayed filter variables 5 Apply the filter to these variable

But, is there a simpler way to do this. Perhaps some fancy ABM block to do the zero order hold and quantization of the converter?

Thanks

Klaus