It should work but not well. Some optimizations are required. I have i5-2400 and 6770 and it’s quite low fps, not at first in 1850 but near to 2000 it gets kinda slow, didn’t measure but it feels like about 15 fps with micro freezes.

I had the same problem with Xcom, I installed 32 bit Ubuntu specifically as I remembered that’s what steam supported… turns out the game was 64 bit.
Do a reinstall if you can 🙂 people were saying it for so many years but 64 bit is indeed here at least. You’ll need it for other stuff as well.

You shoul use a current OS (like Ubuntu, Windows 8, Mac OS), I don’t think that Win XP is supported.
http://www.ubuntu.com/desktop

Steam for Linux: (I use Ubuntu 14.04)
~/.steam/steam/userdata//304730/local/save

Mac – Yourmac -> Library -> Application Support -> Steam -> userdata -> XXXX(your steam id number) -> 304730 -> local -> save

Don’t know about linux, sry.

That is an unfortunate limitation all Apple users face in most games. My best advice is to go get a mouse with a scroll wheel. (that’s what I did) Also installing Steam games on Osx installs just an icon but it also creates folders just like in the widows version in your “programming files” folder. As for where this folder is… I can’t remember but its in library… I think

Text selection is also not available in windows. You cannot even move the cursor or ctrl+backspace to clear word by word. All you can do is to remove last character with backspace or type new content at the end.

No sorry, mac and linux are only 64bit.