Sorry to report that the scanner could not be detected, so having done a part install, I had to give up - I then put the scanner on a Win 2000 laptop, and a Win 98 machine and still it couldn't be found, so now I know why I was given it! (I got the drivers from the primax site, and followed these instructions: click here). Good luck!
Luckily for me, it renewed my determination to get my old Mustek scanner to work properly in XP, and I did!
What may be relevant, is that both installations under XP require you to install the drivers before you connect the hardware - sorry to not be of more help.