meray pc mein msn messenger install nahi ho raha hai....

system 1.7 ram 512 koi to hall nikalo yaro msn messenger install kerna hai koi dost link share kearay k xp mein asani sy install ho jay windows update installer 3.1 bhi install ker lia hai but install he nahi ho raha hai 50% per ja ker bohat slow ho jata hai .........plz help me............