@gollum,
Ok, and do you know where the eject button is and have you tried it?
Because you didn't disclose that either, I'll assume that you do and you did, and that your problem is that it is not working but you should explain things like this in case I'm guessing incorrectly (and wasting time).
In those cases, you may want to try unplugging the device for a few minutes and powering it back on, and if that doesn't work you may have to try to work it out or even disassemble it.
Here are some guides:
http://www.repairfaq.org/sam/vcrrx.htm#vxecu
http://www.fixer.com/no-eject.php
I also tried to look for any special eject release buttons for your model, but all the information I was able to find was about the TV/DVD combo but you may want to look closely (or read your manual) and check for one.