This is a recurring topic so you might want to do a search next time. However as I went through this not so long ago, I can tell you:
- the old 60GB model doesn't really have a way to get the disc out without disassembly, as some of the other models do (you can force the fan to work and then get the disc out on the 40GB version for isntance - this doesn't work reliably on the 60GB version. You can get lucky with flicking the power switch and holding eject, but that's a lottery, and I couldn't pull it off)
- you cannot put your harddrive into a new PS3 without deleting all existing data on it. So that doesn't work at all
- if you want to keep your saves, the only way is by having your YLOD fixed. This can be done for fairly cheap, but you'll have to assume this is only a temporary fix (mine broke again two months later) and so really only gets you your saves back.
then, you can do some of the following:
- if you want to keep exactly everything that was on your old HDD, you'll have to transfer the contents of your HDD from your old PS3 to the new one using the built in utility with both old and new PS3 on the same network (or linked with a cross-link UTP cable)
- if you only want to keep all your saves including protected saves (that cannot be normally copied to an external drive and then restored on another PS3), then you can also sign up for Playstation Plus if you haven't already and use the 'cloud storage' to copy your saves to, your protected saves in particular. I'm using this now, using two PS3s, and its very useful - look forward to games supporting that natively.
- if you don't care about your handful of protected saves (there aren't really that many left, Killzone 2 is one of the bigger ones that still has it I think), you can copy your saves to a USB drive/stick/whatever and restore them on your new system
You can get your disc back also of course by having it fixed, or disassemble the PS3 until you can get to it of course.