Ed, go tohttps://festoolusa.com/account and create an account or log in to your existing account. Then click on the link to manage your tools and then select the edit button beside the tool.
Tried to register my OF2000 from the Reconditioned Tool Sale, but couldn't because it's not an option in the drop down and it won't let me get past that.
DOH! I went straight to 'Routers'. Didn't look for or consider that it might be anywhere else. Sorry about that!
Once I figured that out, it wouldn't let me enter my serial number. Said it had to be at least 100000, while mine was 0003XXXX. So I entered it as 1003XXXX for now. I can easily change it if the form gets changed to accept the old numbers.