[nfbcs] Microsoft .net framework

[Wm. Ritchhart]

I recently downloaded Microsoft .net framework 2.0.  It looks like I now
have three different versions on my computer.  My question is, can I
delete the two earlier versions without screwing anything up on the
computer?  I am running Microsoft XP Service Pack 3, IE 7 and Norton
Internet Security.  When I downloaded the latest version of Microsoft
.net framework, it was one of those optional Microsoft downloads. 
  

THANKS, WILLIAM