I tried to reboot my emachines desktop with the 3 cds I got from emachines... its a system cd which boots up but when It promps for recovery cd it ejects in says can't find specified location

With 3 cds I assume one boot and two recovery. Sometimes a recovery needs the last disk first before it will recover and will prompt you for the first disk after that. I'm not sure but perhaps it needs to know the totality of the recovery (final disk) before it can create a proper partition or something. This has happened to me with something in the past but I don't remember what it was.