The best site I've found so far about information on getting married in thailand is here;

http://www.weddingchaos.co.uk/wedding-abroad/thailand-wedding.asp

contains all sorts of links and information about doing your marriage and wedding in thailand

I can only say from personal experience that you would be better off contacting your own countries embassy in thailand yourself and not relying on a 3rd party company like thaino1.com or wed-in-thailand.com

http://dontusethaino1.blog.com/