I had to get a new hard drive, and put in xp pro now usb does not work & error message that i need usbehci.sys file. I have googled for it and cannnot find where to download. I understand that it is a file new in sp1 - I have the xp home sp1 disks - can I somehow get it off of there. I did a search on the disk for the file it could not find it. Any help would be appreciated.