can i delete files in this directory? c:/windows/installerit is too large and heavy and my drive c hasn't a lot of space.1 person needs an answerI do too

No, leave it alone. If you are that pressed for space uninstall programs you don't use, copy data files (music, documents, pictures, etc.) to an external hard drive and then delete them from the internal hard drive, do maintenance, or buy a larger hard drive. You can clone your current system to the new drive.http://www.elephantboycomputers.com/page2.html#MaintenanceMS-MVP - Elephant Boy Computers - Don't Panic!