hello. very new to asp/vb.net - do have experience with other
languages, so not a code newbie, just asp/vb.net newbie 

i'm making a web form and have 3 radiobuttonlists (each with 3 choices
in them, all are the same value). example:
 
RepeatDirection="Horizontal">
  High
  Medium
  Low

what i'm trying to do is when a user selects, for example, A from rb1,
then change rbl2 or rb3 if A was previously selected in rbl2/rbl3.

if possible, i would appreciate help with the code behind to swap the
value selected between 2 radiobuttonlists. and also if two
radiobuttonlist values are the same, then change the radiobuttonlist
not selected last to nothing.
tried various things in the code behind and the 2nd/3rd one was not
changing.
appreciate any help. thanks...