I just bought a new iPhone, and I'd like to make special layouts and use IWP to access the database on it.

By default, web pages on Safari on the iPhone open at 980 pixels wide. By the iPhone's screen is 380 (or so) pixels wide. It's possible to create a web page that automatically opens in an iPhone to the correct width, but I'm not sure how to do that in FMM.

Here's a page from apple describing how to write a web page for the iPhone:

http://developer.apple.com/iphone/designingcontent.html

Is it possible for me to use IWP but somehow instruct my layouts to open at the right width on an iPhone? I'm not a coder, so I think CWP is over my head.

You would have to use CWP. With FM9 Server, you could use PHP site assistant to help you create these. If you do not want to go that route, you could use an XML feed with an XSL slated with the proper size for the iPhone.

Just to clarify re why not IWP - It is quite bad speed wise event with a fast connection i.e. its difficult to do a lot with it unless its running locally.

I don't think its really an option for the iPhone.