In order to use gsftopk.exe to generate PK files for Type1 fonts, you will need to install Ghostscript. Ghostscript is used in the background for computing the bitmaps. See section 6 about Ghostscript installation.
After that, Windvi should be able to generate PK files for your Type1 fonts, providing you have the corresponding vf and tfm files. It is however wise to try mktexnam.exe on some of your fonts ('mktexnam ptmr8r' for example) to check that the fonts will be put at the right place.