Analyzing Paved Parking Per Town or City

I'm working on a personal project that I'm quite passionate about! I'm analyzing paved parking per town or city. I'm targeting churches primarily because I want to raise people's awareness as to the viability of generating electricity via solar arrays from these digustingly extensive areas laying about doing nothing but burning our bare feet and heating up our atmosphere.... plus the net metering laws in most states serve to protect the utility industry's profit and need changing. I was out in Greensboro NC yesterday (where I attend UNCG) taking pictures of parking lots to include with the maps. Seems rather boring, but I'm hoping they will make a big impact. Especially when you consider that church parking lots sit empty all week long. There are 991 church properties in Guilford County NC. I'm working on doing a spatial join so as to get the specific areas of the paved parking planimetric data that belong to the churches... hard because I don't have a field in both attribute tables that is the same with which to accomplish a join or a relate. Getting professional help on that one - thanks Chris F.! I'll be in touch soon! I'm also hoping to target a few more select cities (Greenville SC, Jacksonville FL, Winter Park FL, Knoxville TN, and somewhere in AL and somewhere in MS) and do the same for them. The annual SEDAAG (Southeastern Division of Association of American Geographers) meeting is Thanksgiving week in Knoxville TN this year and being the environmental activist I am, I'll be laying these nifty informative flyers all around! Plus posting on my blog. Plus I hope to have some sort of a business card printed up within the month and attend concerts just to hand them out.... you can reach LOTS of folks by hanging out at the entrance of a concert! Busy, Busy! Gotta scoot! btw..... Happy Birthday to me!

Note added Nov 5, 2009 -
Well, plans change.  Didn't get to SEDAAG this year and have been too busy to do any paved parking analysis this term.  Hopefully soon.