XML Schema validation

Hi,

I wanted to use the Jabber vCard XML standard. They've put a DTD up here , but not an XSD, so I took the DTD and put it into XMLSpy and got it to make one for me.

The schema validates fine, until... I add a targetNamespace attribute. Any targetNamespace, from the letter "a" to a proper uri.

I really don't understand why this should happen, so if anyone has any clues or suggestions please let me know!

The XSD is in the .txt attachment.

I've found the solution. To add a targetNamespace you also have to add another xlmns attribute.

So
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
becomes
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.example.org/vCard" xmlns="http://www.example.org/vCard">

I haven't seen this mentioned in any of the tutorials I've looked at, possibly it's something so obvious to most that it doesn't need to be mentioned!