read and update XML file

[Mike]

Is it possible to create an XML file to read from using a dropdown and based
on the selection read the XML file again to populate some labels?

Also, is it possible to update an XML file based on the user selection?

example:

my xml file looks like this

<Cars>
<BMW>
<SalesMan1></SalesMan1>
<SalesMan2>/SalesMan2>
</BMW>
</Cars>

if the user picks BMW from the drop down I want to show SalesMan1 and
SalesMan2 in labels, then I want to have an update page, where if the user
picks BMW from the drop down, they update SalesMan1 and or SalesMan2, is
this possible?