Can You Load a Photoshop Brush in PhotoImpact?

Can You Load a Photoshop Brush in PhotoImpact?
No, PI cannot load PS brushes.

Here are two alternatives:

1. Preview the brushes using ABRviewer and export them in a form that can be imported to PI. It is located here. And here is a tutorial on using it in this manner, albeit to import to Corel Photopaint. I suspect a similar approach would work for PI.
2. If you have a copy of Photoshop LE that comes with many printers and scanners, you can use that to get an image of the brush and again work the output into PI. Here is a tutorial.