eMac not booting from CD-R

Ok, so I wrote a disk image of Tiger I aquired LEGALLY! to CD-R (I got a DVD with the CD disk images on it from a friend who has them) using MacDrive on my PC as the disk drive I put in my eMac does not have burning enabled for w/e reason.

So, yes, I put the CD-R into my eMac, it shows up on the desktop and it then asks me to restart my Mac to continue with installation, on boot it gets to the Apple, the disk drive ejects and it boots into Panther.

Any solutions?

Shhh... They're legal copies is what I meant.

Anyway, reply about the problem not that ¬_¬ I need to get this eMac off Panther asap

But it wouldn't matter if I already owned a copy of Tiger legally yeah? I stated a had a MacBook which died, got both the Tiger and Leopard official DVDs. Would use them but I got the CDs before I changed the eMac disk drive, plus Leopard won't go on this eMac without me changing stuff and I cba.

Help now?

EDIT: Oh I actually didn't, that was in another thread. Possibly the "Who has an eMac?" thread.