The closest I could find to the U66 model is a Memorex FU661E (Tiny would almost certainly have rebranded another manufacturer's product.) Apparently, this model uses the same driver as Memorex's 6136U scanner...
The driver is no longer on Memorex's website, but maybe have a go at downloading it from here?
http://members.driverguide.com/driver/detail.php?driverid=60887