I am about to start working with a collegue on a dyanamic site. He has dreamweaver but it running it on a Apple Mac.
Obvously on the PC I use IIS for local testing but wondered if there is a similar feature within the Mac operating system?.
I believe he is using OSX but I am not sure if it is the latest version (if they have versions)

Any help would be appricated

I got an old PC, then set up Linux, Apache, Mysql, PHP (LAMP) system on it, then hung it off my local network.

I use that for development. It was not easy but I learned an enormous amount about all those technologies, especially running a server. You get an insight into what the support staff have to deal with.

I used a mac for developing sites and my customers did not know they thought I was using a pc!

Thanks Alan, the problem is that we won't be on a network. The idea is that he will be at his home I will be at mine and he will be mainly populating some ASP template pages. Thus not having to do any ASP code.
However it would be nice if he could publish (as you do with a PC) locally so he can view the finished pages, hence why I wondered if MACs had their own inbuilt version of IIS.
I like the idea of a PC on a network for testing though, may use that in the future