Can I trust them?
No! ParetoLogic is on record for computer fraud, i wouldn't touch their products (DriverCure, Driver Detective, DriverGuide, DriverUpdates, DriverPro) with a barge pole, certainly mailcious software in my books!
The interwebs are full with complaints about the company.
Why would a person download them?
If you looking for decent software to backup your drivers and keep them updated, get DriverMax:
DriverMax is a new tool that allows
you to download the latest driver
updates for your computer. No more
searching for rare drivers on discs or
on the web or inserting one
installation CD after the other. Just
create a free account, log in, and
start downloading the updates that you
You can also export all your current
drivers (or just the ones that work
ok) to a folder or a compressed file.
After reinstalling Windows you will
have everything in one place!