quicktime downloadQuicktime download?

My iTunes has been working for a year, and one day i went to download some songs on to my fiends Mp3 player well somehow it got all screwed up and messed up my iTunes,now i unistalled it and went to restall it again and it wouldnt let me. It said I needed to restall Quicktime so i tried to and it woquicktime downloaduldnt let me. Now this apple software window pops up and asks me to install itunes and quicktime and when i try, it will download like half-way thru and it cuts out. Is there any other way I can download it? Plus quicktime is still on my computer and when i try to un-install it, it wont let me. Plequicktime downloadase Help!
Thanks
if you cant get to uninstall quicktime try this softwares:



after that clear your internet cache.::
on internet explorer click tools> internet ptions>then on temporary internet files box click delete files.

then download itunes and quicktime again. that should work