Need help reinstalling factory-installed software

I have a Dell Studio 1537 laptop. Without going into the details of how I arrived to this point, I'll just say that in trying to get a fingerprint reader working that broke from an update, I uninstalled the fingerprint reader software. After reinstalling the driver, I want to reinstall the fingerprint reader software, but of course I don't have the original disks (if it was in fact on there and I don't know that it was). I understand that I'm supposed to be able to redownload factory installed software from My Dell Downloads:

https://smartsource.dell.com/web/main.aspx

But when I went there, it lists a very limited selection that I can download. In fact, it is only composed of these four:

Sight Speed Dell Video Chat

Roxio Creator 102 DE

Dell video Chat

Adobe Reader

(and it lists many languages for the last one)

Initially, I thought this was the first page of many, but no, that was it.

What I *want* to download is:

DigitalPersona Fingerprint Software 5.30

So, is there a way I can do this? Or did I screw myself by uninstalling it? (Not that it was working after the update anyway.)

Thanks.