Corrupted iWeb site - Unicode character 194 appears throughout site

Question

I'm using iWeb 3.0.4.
The website I created for my wife's business, BarbroDesigns.com, looks perfect within iWeb. When "Put" to ftp-dom.earthlink.net via Fetch, character 229 (Unicode character 194) appears throughout the website. When I first uploaded the website in 2007 it was fine. Within the last few months something has gone wrong. Recently, I've made several revisions to a particular file, "Contact & Links." Each time I has selected "Get" to transfer the original files to a named desktop folder. Then I launch a new named folder with all the original, unchanged files as well as the revised file. I've also tried uploading just the files at once without having them in a folder. Neither worked.
Unicode character 194 (a capital "A" described online as "Latin capital letter A with circumflex,") appears above headings, beside headings and body copy, at the start of copy blocks, under photos, between photos, and within photo dimension sizes.
It may be that I'm entering text and data into iWeb incorrectly or that, somehow, the file has become corrupted.
As always, I'd appreciate any suggestions or recommendations.
Thank you, Thor

Answer 1

I appreciate each person who's provided excellent suggestions. I'm continuing to err in fixing the website. Let me summarize what I've done to date:
- Created  a plain-text file named "htaccess" (no extension),  typed in "php_flag short_open_tag off," (no quotes; using quotes here to be clear) and also typed in "1 AddDefaultCharset UTF-8,"   "2. AddDefaultCharset UTF -8," "3. AddCharset UTF -8 .html," and "4. AddDefaultCharset Off" I then saved the plain-text file as ".htaccess" and put the file in the BarbroDesigns.com public folder via Fetch. I also put ".htaccess" at the top level of "public - ftp-dom.earthlink.net." Perhaps it should have been, as suggested in the document "Fixing Strange Characters on the iWeb Pages," at a higher level; "This file should be located at the top level of your space on the server." I've just added it there with no change in the sige display.
I also made sure the FTP settings, the Server Settings, and the Safari settings were set to UTF-8.
The last thing I did (and admitting that I may be way into overkill) was check W3C: http://web-sniffer.net/, and got this info:Http/1.0 (with Host header) and got this:
HTTP Request Header
Connect to 66.175.58.9 on port 80 ... ok  GET / HTTP/1.0[CRLF] Host: barbrodesigns.com[CRLF] Connection: close[CRLF] User-Agent: Web-sniffer/1.0.37 (+http://web-sniffer.net/)[CRLF] Accept-Encoding: gzip[CRLF] Accept-Charset: ISO-8859-1,UTF-8;q=0.7,*;q=0.7[CRLF] Cache-Control: no-cache[CRLF] Accept-Language: de,en;q=0.7,en-us;q=0.3[CRLF] Referer: http://web-sniffer.net/[CRLF] [CRLF]
HTTP Response Header
Status: HTTP/1.1 500 Internal Server Error
The "500 Internal Server Error" likely indicates I've done too much or done this by misunderstanding the discussion recommendations or done them in error.
If anyone has a suggestion to fix all this I'd be obliged.
Thank you, Thor