NWR: Wine tours

It's my dad's 50th b-day today and I still haven't gotten a gift! Since he really is into wine I was thinking of sending him and prob my mom out east to the wineries but I have no idea where to begin and what really goes on out there.

I'm looking for something where they'll provide a limo to and from and somewhere where they'll have plenty of wine to sample.

I know a bunch of you have looked into wineries for b-parties and the such so I'm hoping you guys can help me on this.

Thanks so much!