Doh!
I deleted everything in /Library/Receipts as part of my cleaning binge. I guess that was a bad thing� to do. Is it really that important for permissions repair or can I get by without these packages until 10.4.1?
Edit:
Searched and found my answer, but since my gf now has Tiger and wants help installing it...all I need to do is to copy her /Library/Receipts (though BaseSystem.pkg is really what I need) and she has the same programs as I do.