processing XML and CI - Best practice

[eluser]Spir[/eluser]
Hi.

I'm willing to use CI for an app I'm building. In this app I'll have to parse some XML to feed a page with data (so no DDB here).

So I will grab my XML file, parse it using simle XML and manage it (CRUD).

I was wondering where I should do that. in models? I'm not sure but I think it's the best way.
Any recommandation?