USB Mini Wireless Optical Mouse
Windows XP has built-in drivers to allow connection of USB Optical mouses.
But Windows 98 doesn't. For this operating system, you may have trouble connecting your USB optical mouse if you have no other USB devices on your system.
In this case you can download the driver here (870kb).
After downloading the ZIP file, you must 'unzip' it into an empty folder (you will need a Zip utility to do that) then run Setup.exe to install the driver.
USB Wireless Rechargeable Optical Mouse
If you have the Wireless Rechargeable Optical Mouse a small manual leaflet is included inside the two layers of cardboard forming the inner packaging. However, many people simply throw away the packaging without realizing that the manual leaflet is there!
If you have either thrown away or lost your manual leaflet, then please see here for a PDF version.