if you're simply concerned about just the files, why not use a usb memory stick. that's what i do between work (pc) and home (mac) when i want to work at home (saves e-mailing and downloading. usb is cross platform and w/my stick at 256mb it works fine but i did discover that where my "stick" is usb 2.0, my mac is a bit older and has usb 1.0 (blue & white g3) so it either has to be plugged into my mac directly or i have to plug my external hub in to get more power. other than that, it works great.

another option (if you have a lot of data) would be to burn a cd of your "pc stuph" and the mac will read the cd w/no problem-then you can just copy what you need