How do i copy files from my pc to my imac using an ethernet cable
What Mac, with what version of OS X, are you copying to?
What OS are you running on your pc?
The simplest thing would be to copy to a flash drive.
Access windows files
See KB Articles: Setting-up a new Mac from an old one, its Backups, or a PC and http://support.apple.com/kb/HT1408 How to transfer data from a PC to a Macintosh
Retrieving data ...