371321 Postcard design needed ASAP

My family owns a horse drawn carriage company (we do weddings.. dances/proms, parties, festivals, parades, and more) and we are looking to have a 4x6 inch postcard designed to either mail or handout to potential customers. We just need the front side designed, as we have a backside done for the most part. I'd like to see a few different types of designs, something flashy, something with a classic and fancy look and so on. I'm going to attach a handful of pictures to be used, you can use them all, some of them or just one. Also feel free to use our company name and/or slogan on it. I would like to have the file in an editable format...be it in Microsoft Publisher or an editable PNG file for Fireworks. Also we have our own font for our company name, that I would rather not send out and just be able to convert the font myself (unless I decide otherwise down the line). TO BE CONSIDERED for this job I would like a few mock ups submitted per person (you may include your "watermark" or logo or whatever to insure that I won't steal your design). These mock ups must be the real deal and not just something junky thrown together, I need to see some real nice work on these to be able to pick someone. Company Name: Carriage Limousine Service Slogan: Take a Ride Back in Time Company Colors: White, Grey (code #6A6A6A) and Maroon (code #990000)...Black could also be used to an extent. That should be all for now...feel free to ask any questions and if there is any further info I will post it here as it comes up!!