you mean the forum itself or the hosting? For the forum go to www.phpbb.com .. for hosting you need a space to put that forum make sure it allows you to use php based stuff.. I run a phpbb forum myself.. easy peasy
i didn't answer because, frankly, if you're going to put up a nudist site you're going to have a lot of problems. 1)you'll need to thoroughly read over the terms of service for any service you consider, to make sure that they allow 'adult' images. By posting nude images, it becomes 'adult'; that's simply that. 2)Look into regulation 2257. Regulation 2257 is a rule stating (as I understand it) that any site which contains nude pictures must also have documented proof available on request that everyone in any photos are 18 years old or older. This is targeted (obviously) at porn sites BUT it's going to make any free host totally unwilling to host any kind of nudist site. Give those two points serious and thorough consideration before putting a web site up there. As far as a technical points go; velvet's got it right there; look for a phpbb. This board here is either php or vbulliten (which is very similar to php). Be aware that php tends to have security flaws and for that reason crackers tend to go for php sites; but it's not really likely you'll be affected. Just make a point of createing strong administrative passwords and do some reading on good security practices.
