HearnsChristmas
.com

Below is a list of links that relate to christmas displays, setting one up and are all great resources to check out.
Planet Christmas
light-o-rama
hostmonster
christmasdisplays.net
Planet Christmas Forum
Planet Christmas is the place to go when your looking for tons of information about anything related to christmas lighting displays.
Planet Christmas has a great forum.  Discussing christmas lighting displays asking questions,reading posts from everyone else who is doing the same thing is an extremely good thing to have.
Light-O-Rama is the site you will have to visit if you want to computerize your light show, great site, drop by the planet christmas board for any answers to questions you might have on anything LOR.
Another wonderful resource on all things related to christmas displays and animated lighting.  Lots of helpful projects.  My radio station sign was constructed their instructions.
If you go to the extreme of making a website, you might need to host it somewhere,  hostmonster is the site I choose for hearnschristmas.com and its the cheapest if you sign up for the two year plan.
Links
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welovechristmaslights
WeLoveChristmaslights.com is a great site that has a list of all large christmas displays through-out the different states.  Check it out if your looking for other large christmas display.  This link leads directly to the Michigan displays page.