I cannot set up Java Runtime Environment 1.7.0.1 (32-bit)

Hello everyone, first of all I cannot put in the current Java. Java Run time Environment 1.7.0.1 (32-bit)
Then I cannot uninstall Java 7, because it would not let me.
I am wondering what is causing this problem and why I could not get it installed properly . Does anyone have an opinion on this?
Thank you so much.
