How to use EXIF items?

[steventorres]

Hello
I want to insert some EXIF infomation to my webpage generated by XnView. The EXIF infomation of my photo looks like this:
[Camera]
Make : Nikon
......
[Image]
F-Number : F3.5
......
[Makernotes]
ISO value : 60
......
I can user tag <Make> and <F-Number> to get the item content. But tag <ISO value> doesn't work. The items which are not below [Camera] and [Image] can't be refered to.
How could I use them? Please guide me. Thanks in advance!