Our graphics person uses Adobe Illustrator and we'd like to use her images inside our WPF application as paths. Is there a way to do this?
We use Expression Design to do this.
Unfortunately, there currently is no free beta preview like Blend 2.5, however, you can download a trial copy (which I think you can use for 90 days).
If you don't want to go this route, I know that a lot of people also use Mike Swanson's exporter that is pointed to by curtisk above.