newb to xml....

I have an XML file, and I have a web page....(great start huh?)

I want the data to display as follows:

Data 1 | Data 2 | Data 3 | Data 4

but all I can make work is:

Data 1
Data 2
Data 3

If I try anything else, I get:

Data 1 | Data 1 | Data 1 |Data 1

Help?