hello i am new here and am in desperate need of help i just purchased approximately 100 g3's i need to reload the os and basically i have never touched a mac before i have tried holding the c button down after download mac os x 10.3 panther or tiger whichever one it was but it won't boot from cd the computers were owned by the school and they load into what looks like a program requireing a password to use i disabled the extensions by holding the shift key during boot but it still wants a password to quit using the finder or something like that any help would be great i'm not an idiot when it comes to computers but i have never used a mac so i don't knopw any of the commands or anything thanks before hand