Some scanner/software combos just don't deal well with B&W film. I'm no scanner expert, but my assumption is that the software is designed for dyes, not grain. Scanning as a positive, adjusting the settings in the preview to give a good negative image, and then inverting in Photoshop usually solves that problem.

If your original software is the pits, Art, you might try Viewscan by Hamrick Software ( It's relatively inexpensive and gets rave reviews. Silverfast seems to be considered the best for desktop scanners. But, if it doesn't come with the scanner, it's expensive.