new PC free Office 2003 , missing SKU112.cab can't /uninstall

[desperate]

Running XP,,New Compaq PC has free trail MSoffice 2003 , wanted to uninstall
and load my office 97 ,,, something screwed up. Will not install or uninstall
now , searching for SKU112.CAB file ,,, not on hard drive or restore disk
Please help