Installing programs on my computer user account only?

To answer you, the administrator will always get access to the files that you install. However if another use with the same privileges as you have installs something it will not be visible to you. The administrator is the super user and has access to all accounts.

It is just the way Windows is made.

No, the user accounts don't have anything to do with programs being installed because all accounts are using the same hard drive(s). When you install something to the hard drive, it's on there, and accessible to anyone on the computer because they have access to the hard drive too. But you can delete the icon to the program and still have it on your profile, or vice versa and add a shortcut to it without it being on someone else's profile.

There are a few programs that will ask during the installation process if you want it available for all users or just the current user but most programs I install don't give the option.

I try this too. sometimes i don't be attentive to something and that i think of of that i might desire to undergo in concepts that to later ask on Yahoo strategies. regrettably infinite the time i'm forgeting it interior the previous i'm getting abode