I work in an environment using almost entirely PCs and rendering out of after effects, however I edit on FCP. There are no snags whatsoever. People who say PCs can only handle WMVs are being ignorant. You can render AVI, MOV, WMV, MPG and pretty much anything else you can from a mac. If you are using an AJA card they have a codec for PC users that matches apple’s uncompressed 8 or 10 bit settings, so just render to that if that is your setup and you are editing SD. Its extremely simple. I go from mac to pc without learning any new software (other than knowing final cut of course).