thanks Jani, Andrew!
I guess I'll have to format the HD from my Windows system in FAT format.
Is there a place online where I can find how to do just that? Or can I just choose the format type when plugging in the first time?
It depends on whether it's pre-formatted or not, but usually you can just right-click on the drive icon, select "Format", and select "FAT32" from a pull-down list.
IF I recall correctly, that is.