XML Schema digital signature namespace

[Badajoz95]

Hi,

I want to be able to use digitial signatures on InfoPath forms. I am using
an XML Schema file as my data source and hence the InfoPath help says that I
need to use an "XML Schema that has a digital signature namespace".

I am new to XML and InfoPath and so any pointers or help would be really
appreciated. Any one know of where to get any examples, syntax examples and
/ or instructions on how to go about this?

Thanks in advance,

Paul.