VB is oblject oriented from VB5.0, VB6.0 is "more" OOP, VB.Net is "fully" OOP. There way to make converter, but this tools will be very expensive. There are a few companies which make thas - convert VFP to VB.
My personal advice is to improve VFP application, but if this company pay for conversion this guy will get money of course. May be this is company strategy or ...