The closest I've found this far is at http://rabbe.tumblr.com/post/23117297936/mac-us-keyboard-layout-for-windows.
EDIT: Disregard my comment about the missing modifiers for curly quotes. For some reason, I just had to reboot and then they worked.
Taken from the linked site…
No modifiers
` 1 2 3 4 5 6 7 8 9 0 - = q w e r t y u i o p [ ] \ a s d f g h j k l ; ' z x c v b n m, . /
Shift
~ ! @ # $ % ^ & * ( ) _ + Q W E R T Y U I O P { } | A S D F G H J K L : " Z X C V B N M < > ?
Option
` ¡ ™ £ ¢ ∞ § ¶ • ª º – ≠ œ ∑ ´ ® † ¥ ¨ ˆ ø π “ ‘ « å ß ∂ ƒ © ˙ ∆ ˚ ¬ … æ Ω ≈ ç √ ∫ ˜ µ ≤ ≥ ÷
Option+Shift
` ⁄ € ‹ › fi fl ‡ ° · ‚ — ± Œ „ ´ ‰ ˇ Á ¨ ˆ Ø ∏ ” ’ » Å Í Î Ï ˝ Ó Ô Ò Ú Æ ¸ ˛ Ç ◊ ı ˜  ¯ ˘ ¿