Can't access my username folder in old XP

[gabweb]

HI, I had to change the motherboard of my PC and I installed XP in a new HD.
The problem is that I can't acces my username folders (administrator) on the old HD, all other folders and files on the old HD are OK even the other users folders can be opened without problem. The older HD is OK and recognized, all the information is there but I can't get it!!
Can anyone help me to solve my problem and open those folders? I get an "acces denied" message
Thank you
Gabriel

[Miz]

The Microsoft Knowledge Base article, How to take ownership of files and folders in Windows XP has the steps you need to get into your files.