It does work with Windows 7 ! I've been using Windows 7 for a while now, and Answers certainly works on my computer (otherwise I would not have been able to read your question - or answer it !)
as its new, it will work for windows 7
Yes, standard mouse does work with Windows 7.
Yes, Dungeons and Dragons Online will work on Windows 7.
Yes - Open Office will work with Windows 7.
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Yes, the Warcraft series of RTS games should work fine in Windows 7. The MMORPG World of Warcraft will definitely work in Windows 7.
Windows 7 will work on a recent Mac (See links below).
It will definitely work on windows 9000 but I'm not sure about windows 7
Yes, it works perfect in Windows 7.
Yes it does! I play it on windows 7 :)
Yes, most of them will work.
If it worked on Windows Vista it will work on Windows 7.