Lost Product Key code

I need to load Office 2000 on my new XP computer. I have the disks for Office 2000 but can’t find the Product Key Code so I can install it. I called the Gateway tech support but they didn’t help. What I need is word, excel, powerpoint, and outlook. I know there’s bound to be a way to get around it. Can someone please help? New home email address is gpwn4E@aol.com.