1.) thats exactly it .. u need spftware to emulate the 4 channel sound
which will be on ur driver cd which u didnt get unfortunately
2) IR is optional ...till now i havent seen any mobo with a port b.undled ... tho they do keep a connection on the mobo
get an external USB one for Rs. 800
3.) during boot up .. on the screen it'll say press some key to show POST
"some" could be any key .. mostly TAB
u can also disable the boot screen from ur BIOS .... press del to enter ur setup .. and disable it from there
[ P.O.S.T. = Power On Self Test ]
4.) hmm .. sorry no idea

what does the manaul say ? maybe we can decipher it for u