"eject" button on PC keyboard?

I'm using a G4 PowerMac (backup to the Powerbook with which I'm registered) with a PC keyboard. Is there a key or combination of keys on this keyboard equal to the disc eject button on an Apple keyboard?

The keyboard is an old Compaq model.

Are there any keyboards, besides Apple, that have an eject button (for superdrive)?

- Dual 867 MHz running 10.3.9

Thanks.