I don't know how to get the program to work for you. I'm taking a guess you have a Visioneer scanner. If the scanner drivers installed ok, you can use other programs to scan with. Try "Paint" and see if you can acquire your images through it. Many Graphics programs have the ability to acquire images from scanners, experiment around.
If your software came with the scanner, contact Visioneer and ask them if they have a patch available for it to run in XP.
with both Visioneer Scanners and PaperPort. I banged my head against the wall for an entire weekend. Gave up on the Visioneer Scanner, XP not supported Visioneer(some Models). PaperPort was another story. Try opening Word: Inserticture>From Scanner or Camera. It worked for me, rather than opening PaperPort, use acquire image in each program.