Many Mac shortcuts can still be used if remotely connected to a Mac from a Windows PD using GoToMyPC or some other remote control software.
| Mac | Windows |
| command (Open Apple or clover symbol) | Windows logo key |
| option (prev. Closed Apple or 2-pronged fork) | Alt |
| ctrl (horiz line with carat below) | Ctrl |
| shift (open up arrow) | Shift |
| eject button (closed triangle w/ horiz line below) | F12 |
Here’s a list of Mac shortcuts:
http://support.apple.com/kb/HT1343
http://guides.macrumors.com/Keyboard_shortcuts
Description of key useage: http://www.modmini.com/pcmac/howto/kbmouse/mackeyboard.php

