Recover dynamic XML to insert in an external HTML page

[sodax]

Hello I'm an XML new user, I understand the goal of XML and I have worked with statics XML pages.

in fact I wish to know how can I recover a dynamic XML doc given by a partner in order to insert it on my site with my own XSLT.

XML doc format (belong to a partner) contains news that vairiate day by day, so my problem is how can I recover all the xml doc and make it works onto my page by updating it day per day automatically.

thanks a lot.