I'm not sure I understand the situation right now, so feel free to correct me if I'm wrong....
You reinstalled XP to a partition that used to contain XP in the past as well(?).
If your goal was to get keep your old files and programs but get rid of _____, then this was the wrong way to go about it; since both are stored in profiles that are a part of the operating system, not just the drive/partition.
At this point, your files should still be there, and the programs too. But you can't run most of these programs becase
a) their shortcuts don't exist
b) their settings are not saved/created for this copy of XP.
I'm pretty sure I'm missing something here, so mind explaining once again what it is you want to do?