Excel Based Contact Integrator

I am in need of an excel based sheet/macro/vba that analyzes a CSV file of contact information. The macro needs to be able to keep tract of my last contact with contacts in the list, and output a "rotating list" of whom I haven't spoken to/emailed/made notes on/etc. The structure of the outputted csv will not be altered each time, but the list will get longer. If this can be completed in Google Docs, such that the macro would be available on the web and my mobile phone, that would be the direction.