Installation Problem: Can't boot from isos (RELEASE 5.3)

[David Nies]

Hello!

I'm new to FreeBSD, but not to Unix. I've been using linux for quiet a 
long time, but recently, I've heard about the benefits of FreeBSD. So I 
downloaded the latest iso-images of the 5.3-RELEASE. I burned them on CD 
and tried to boot from them. Everything went fine, lots of text passing 
by showing my hardware, and then it freezes after this line: ``acd1: 
CDRW <HL-DT-ST GCE-8520B/1.02> at ata1-slave UDMA33''.

I don't know anything to do. Can you please give me some hints?

Thanks in advance.