When iTunes aborted the install, it was simply telling you that since the install did not complete, no modifications have been done to your computer from the attempted install.
There's nothing you have to do to fix this, but I would focus on why iTunes stopped installing...maybe you have the 64 bit version of the install and just have a 32 bit version of Windows.
Click Start, right click My Computer, select Properties. Then look around 1/2 way down the window and see if you're either 32 or 64 bit. That'll let you know what version installer you should download.
I checked what you told me, it says system type-64 bit. I also did the delete of the appdata and removed it and emptied the temp file. Now what? I really don't know much about all this or what to do. Thanks for your input though. I do appreciate it.