synced,
Welcome to the Discussions.
Please identify which model G3 you have:
http://docs.info.apple.com/article.html?artnum=24604
Do you have any bootable CDs for this model?
Will the powerbook start up to the flashing '?' on the gray screen, or is there no life at all?
If you are concerned about privacy, you can always as a last resort remove the HD. Not sure from your post if you would like to make a working powerbook or are planning to dispose of it.