wedding logo...

What program do I need to create one? i need to have one for the favors I have in mind and was wondering if someone can coach me through it. I want our names with our last initial 'F' in the middle with our date on the bottom. I would also like to incorporate a grape vine somewhere (maybe under our names in place of an underline or something) since we are having a vineyard theme. It also can't be too big. My colors are sage green, brown, and a light violet purple..please help ! Thanks