Hi

there on your local disk in driveletter:\windows\system and driveletter:\windows\system32
you won't see them if they are hisdden you will need to do this to view them
Seeing your hidden files and system files in Vista is not much different than in XP. Here are the step-by-step directions. Remember that system files are hidden for a reason.
1. Click the round blue
Start thing in the left corner
2. Click
Control Panel
3. Click
Folder Options
4. Click the
View tab
5. Click
Show hidden files and folders
6. If you want to see system files as well, unclick
Hide protected operating system files (Recommended)
7. Click
OK