Itunes reinstall error 2404 missing component

I removed and reinstalled Itunes. got all the way to the end and it is stuck at Status about 2 bars from the end. I opened C programs & see Itunes & others, Bonjour and Apple Software Updates. I opened Itune & get error. Itunes component missing repair or reinstall itunes (-42404). how do i find what's missing?

really all im trying to do is access my itunes account use sync phone, ipod from my desktop PC. Which is the same error (42404 i got when trying to authorize using my old itunes version that led me to remove and reinstall new. Trying to authorize the new version Im back where i started.Missing component. It is accessable from my laptop, iphone and ipad.