iwp : max 100.
cmp : max 200.
fms : max 250
fmsa : ilimitado
odbs : max. 50
Here's a run down of the web publishing options available and resources for learning them.
Yes you can make only a portion of your solution accessible via custom web publishing and that is the norm. If you made your entire database accessible for the web then you've be multiplying your work many times and able to take advantage of many of the features of FileMaker.
Hope that helps,
Thanks a million. I'll give this a go. Cheers Joh