You should probably post this question in the All Things Apple and/or the Unix forums instead of the Microsoft one. If it is possible, folks in those forums would know and may be able to tell you how specifically...
I don't believe so.... the tool used for Windows 7 is specifically for Windows.
Since the tool is a very small download, your best bet is probably to find a friend/family member with a windows PC you can borrow for 10 minutes, because that is as much as it takes to make the USB bootable windows 7 install.