Does anyone have suggestions of where I can upload my mod? I had originally hoped to upload it to my Wordpress page but it does not appear to be able to accept ZIP files. It is rather large at 451 megabytes.

Looking for something free of course :p and someplace where it will stay for a long time.

AtomicGamer, ModDB, Rapidshare and Megaupload can take files of that size.
Rapidshare has a limit of 500 mb/file.

Also, get 7zip and compress it to .7z rather than zip. 7z is much better at compression.

But more people will then first complain, that they can't unpack these files.
That's why i use winzip, the small amount of saved space is imho not worth the complains you get.

I was wondering that myself? Several of my testers are completely non-computer people and always ask basic questions that I thought most PC gamers would know -- like why doesn't zip work?

ouch!

Then you should maybe invest a half hour in reading and testing out this here (http://forums.civfanatics.com/showthread.php?t=292464).
An installer makes life easier.

Fantastic. Thanks for the link... I will check this out for it is well worth the time to learn it.