I'm unable to restore Microsoft office 2003 because pop ups keep apppearing saying sku112.cab file is missing,what are my alternatives in rectifying this problemn?

What are you trying to install from?

Cowboy, go to this link, it will help you out.. http://support.microsoft.com/kb/896866

Ummm just were abouts are you getting this message... is it possible to screen shot and upload the pic to tinypic.com so we can see?

I did a full system scan, And can't find any file which is called sku112.cab. But yeah. Im not saying that your lying. I have many expriance in replacing system files. From back on Windows 98.