I did a reinstall of XP Pro without formatting, I had some XP file problems (you know that boot loader thing and this and that missing .dll

All went fine, but I have these user accounts from the last install and the new one doesn't see them or the software that was being used by them.
So I guess 2 things,
How do I get rid of the extra user accounts, (do I need to edit the registry?)
and how do I get the fresh install to see my old software?
It's there, but even doing a search it doesn't show up.
Doctors! can we save this patient?? Paleeeese! I'll really be a crabby moderator if we can't!