Power User asn sold by Micro Warehouse. I was unable to locate this manufacturer anywhere on the Internet. I finally found the disk supplied by the retailer when I opened it referred to the product as USMD. I believe that Power User is a Micro Warehouse brand because they have similar logos. I was also nable to locate any drivers under the Micro Warehouse name. This driver is only required for 98/98SE/ME users. Win 2000/XP does not require driver. This is an .EXE file. You should be able to simply click Start>Run then Browse to where you downloaded the file, and click OK. The file will load automagically.