[Seisunix] Zero Offset VSP Processing

Hello

I am looking for a software for Zero Offset Processing, but all softwares are required money. I've found this mailing list. So, I can try Seismic Unix for this. However, I guess it is tough doing Zero Offset VSP processing on Seismic Unix.

Still, I want to ask. Does anyone have VSP fundamental processing scripts? If so, I would be appreciated.

Thank you Erdi