I'm not sure, but maybe it's worth looking into-
if your ipod is not full of music, maybe you can use some of that space to store your files. I don't know if windows(or whatever os you are running on the p.c) will recognize a Mac formatted ipod as an external drive, but maybe you can network the p.c and your pb- then save to ipod. Yeah it might be a lot of work, but it would be cheaper than buying a new drive.
holla!