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 (www.hamrick.com). 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.