1. Lid off PC
2. Earth your self on a radiator or something to get rid of static.
3. Remove a plate from one of the back slots, the one of which you are fitting it in, it will be a white PCI slot, at the bottom left.
4. Slot the crad in carefully but firmly.
5. Boot up.
6. Install Drivers for 98Se, yuo may also need the USB patch for Win 98 to allow it to use USB 2.0 devices.