Simple answer: NO. Compiz is only available on LINUX. The closest thing that you will get to it in XP is "Yodm 3d". Yodm 3d is a small free program that gives ur desktop the 3d cube effect. But I believe Yodm 3d changed its name to Deskspace now and is no longer free, but you might still be able to find the older free version. Just do a search on the net. But as far as compiz goes, I doubt they will ever make a version of it for XP - since it is one of the better marketting points for LINUX.
They are "compatible" in the sense that many applications that run on Windows XP will run on Windows Vista.
Yes, Windows Live Messenger 2009 is XP, Vista and 7 compatible.
Yes, if you purchase Microsoft Office 2010, it will be compatible with Windows XP. If you get the newer version like Microsoft Office 2013, it will not be compatible with Windows XP.
sometimes it works well with windows XP
yes, from windows XP to windows 7, but only windows!
Not yet
The first Fable game for the PC is compatible with Windows XP. It says so in the system requirements.
It is compatible with windows xp,so yes.
Yes
Do you mean the games say "compatible with windows 98?" and you have Windows XP? Games are backwards compatible. Meaning, if the games say "windows 98", windows 95 is ok (anything before windows 98 will work). But it is not forward compatible--Windows 2000, windows xp, etc. will not work. does this answer?
There are certain tricks to install MAC on PC (or Windows Xp on MAC) but it's rather challange and requires special skills. Thus, the answer is NO, MAC is not compatible with Windows XP.
Yes.