Live 8 will not work after laptop crash.

[novation1]

I just had a bad laptop crash and had to completely reinstall my OS. (Windows XP) Now live wiil not work,it installs but will not run. Ableton support have asked me to delete two files which are "preferences.cfg" and " Unlock.cfg". These are both located here:

Windows: C: \documents and settings\[username]\application data\Ableton\live x.x\preferences\preferences.cfg and here:

Windows XP: C:\Documents and Settings\”username”\Application Data\Ableton\Live 8.0.X\Unlock.

The problem is both files are not in these folders so i cannot delete them(which is strange) and then re run live.I have e mailed ableton back but not yet had a reply. I just dont know what to do now,i dont really want to do another install which may not even work. I hope someone can help on this,i have not written any beats for a week!
I am running the latest version of live, 8.1.3