http://www.drowaelder.de/winpe/keyfi...yfinder-pe.cab
should work fine, its part of the PE Builder Plug-ins collection for UBCD4win.
UBCD4win being another option if you were more techy, would be to use that to rebuild your hidden i386 dir somewere and re-make your own windows CD(the windows install after its copyed from the OS cd.....) but thats way more time than we have to walk readers through.
http://www.drowaelder.de/winpe/PEIndex.htm
http://www.ubcd4win.com/index.htm