Install it o.o
then there's a comprehensive guide at the website you get pcsx2 from :)
http://www.pcsx2.net/guide.php
This will tell you exactly how to set it up :)
Yes. The Windows version of PCSX2 runs on Windows XP.
Download an ISO file of FIFA Street 2 and then download an emulator to play it. I would recommend PCSX 2 v 1.0.0
Yes.
If you are talking about the PC version, then YES. But, you can't install the PS2 version. You need PCSX2 and the PS2 ISO image of the game for that. You can get PCSX2 from http://pcsx2.net You need the best PCs out there to run PCSX2 at full speed.
Look at the compatibility list on the Pcsx2 emulator on the top menu bar were it says help. It will give you a list of what games can run and what can not.
Unfortunately u cannot
You cannot fix your CPU not supporting SSE4.1, short of buying a new CPU. PCSX2 does not require SSE4.1 to run, though.
you can play it by using pcsx2 but you should have a good system for that
Yes it can run FIFA 11 but its better to keep the graphics setting lower
fifa 11
windows is down
The related link has information on the Bios configuration to run the PCSX2 emulator.