Im not sure if you realized, but you can installYVES/ex-ExtUtils-Install-1.3701.tar.gz and assuming you have Win32API::File installed this stuff will be handled properly. This package is a proposed split off of the installation code in the ExtUtils::MakeMaker bundle. We are waiting on Schwern to respond
I managed to get through to him finally yesterday, and he's said he'll be working on it shortly, he hasn't been paying much attention to P5P lately.
Adam K