Wireless keyboards have been growing in popularity and use around the office and home in recent years. Connecting a wireless keyboard is not any harder to achieve then attaching a USB or PS/2 keyboard. Actually, you connect the three in a very similar manner. The only real difference to connecting a wireless keyboard is that you attach a wireless receiver to the computer instead of attaching the keyboard.
The wireless keyboard operates on battery power because it has not attached to the source of power - the computer via a USB or PS/2 port. You will need to put batteries in the wireless keyboard before connecting the wireless receiver. Consider using rechargeable batteries, keeping extra charged batteries available, and using a battery charger that can be plugged into a power plug. This way work never stops for long if the batteries die, and you will always have extras at the ready.
Once the batteries are in place, attach the wireless keyboard in a Vista computer by clicking Start > Control Panel > Hardware and Sound > Wireless Devices > Add button in Wireless Devices Window. Remember to place your wireless receiver over 10 inches from your computer and monitor to prevent interference from being an issue.
To Windows your wireless receiver appears as if it is a keyboard, so you will not need to add any additional software to get the wireless keyboard to work as it should. You will need to once reinstall any software associated with particular advanced feature to work with the feature in question.
For more tips on connecting keyboards, check out Installing Keyboards; Locating Ports and Connecting the Keyboard.