Reinstalling Win XP

I’m getting a kernel32.dll error on one of my XP machines running Office XP. This is the error:
Event ID:1000
Source: Microsoft Office 10
Type: Error
Faulting application outlook.exe, version 10.0.4510.0, faulting module kernel32.dll, version 5.1.2600.1106, fault address 0x0001a67a.

I tried varius things but it keeps coming back, it hangs Outlook up.

Question ?
If I reinstall Windows XP from CD will I have to reload apps ? what apps are you aware of that have to be reinstalled ?