yesterday added Freon to my car and the a/c line started to frost up...and the strangest thing the passanger side started to blow cold air but the drivers side still blew hot air..any suggestions to 1 why the line is freezing and 2 why only the passanger side is blowing cold air??

Do you have dual climate zone?

That'* normal for the line to freeze like that.

And why did you add freon?

was not getting cool air was blowing room temp/hot air

You probably need to add more freon to it. This is typical with low freon. One side gets cool, but not the left side.