At the moment, I use only windows XP pro. I also have ntfsprogs 1.9.0. installed. In an attempt to upgrade from ntfsprogs 1.9.0. to 1.12.1., I downloaded the following files for 1.12.1:

ntfsprogs-1.12.1-1.i586.rpm
ntfsprogs-1.12.1-1.src.rpm
ntfsprogs-1.12.1.tar
ntfsprogs-devel-1.12.1-1.i586.rpm
ntfsprogs-fuse-1.12.1-1.i586.rpm
ntfsprogs-gnomevfs-1.12.1-1.i586.rpm

Question is how do install them on Windows XP.

I was gonna say you should lay off the crack but Google suggested it was I who shouldn't jump to conclusions. Are you using Gnuwin32? It doesn't seem that it provides a way to install RPMs and 1.9.0 is the newest ntfsprogs they've got. You could try installing the new version from source or there seem to be some non-free programs to install RPM files under Windows although I don't think they'd be compatible with Gnuwin32. Google for RPM Elite, a site I found mentioned that.

I'd try compiling from source though, if it works it'll be the easiest and cheapest way to update.