Error messages I

[sigmundf]

I have a windows XP professional, internet explorer 8
when I turn on the computer error messages come on
application error
defmgr.exe
reader_sl.exe
isuspm.exe
mwsoemon.exe
jusched.exe
AdobeARM.exe
please advise how to remedy and fix this problem ?

2) how good is the Microsoft scanner ?
should I use another scanner ? or,
is the Microsoft scanner good enough
please advise on all,

thanks
sigmundf