PC Mover twitches & glitches

I'm on my new dell with Vista premium that I got from qvc. So far, working
fine but I moved all my files etc from my old Gateway with xp using the pc
mover software included with my computer and now have the following problems:

I have trouble deleting programs I no longer need - some Norton security
stuff (I have Mcafee on the new computer).

My screensavers have switched to the old xp and I can't find the cool new
vista screensavers anywhere.

Short of undoing the entire transfer with a "clean" version of vista and
then reinstalling my programs and files manually, any suggestions, tips or
ideas?

thanks