Depends on how you mean. Like, I've transferred files without a problem from my PC to the iMac G3, but it has to be the right kind of disk, and unless it's a CD-RW, the iMac won't be able to write CD's for the PC.

Of course, a regular USB memory stick works perfectly to transfer files from an iMac G3 to a PC. I do it all the time.

But if you mean actually swapping the drive into a PC, though, then there I can't help you.

-Apostrophe