You are probably better off purchasing ad space on Realtor.com and other real estate related sites than yellow pages advertising. Also check into some of the relocation sites. Since you are going national, I assume you are trying to get the relocation market? You may want to target mailings to relocation realtors or HR Departments of major corporations. I'm just going by the limited information that you have given, so I could be way off base on what it is that you are trying to accomplish. Yellow pages advertising is Super expensive and usually works much better for local retail operations. I am the Marketing and Advertising Manager for a New Home and Commercial Developer and we do very little in yellow pages advertising because it just isn't that effective in lead generation. Mary