A fzp file is not a .fzpz file (the .fzp is only one part of an .fzpz file. In this case, use the Resistor upright.fzpz file from this post. Download it, start Fritzing and do File->open then navigate to the fzpz file and click OK. That will load the part in to the mine parts bin ready for use:
A search for “top view” in the forums will find the other similar parts (leds transistors etc.) designed for perfboard use. A fzpz file is a zipped file that contains typically 5 files, a .fzp and 4.svg files (one for each view):
part.file.fzp
svg.breadboard.file.svg
svg.icon.file.svg
svg.pbc.file.svg
svg.schematic.file.svg
You can export them by right clicking on the part in the parts bin and selecting export part which will write the .fzp file. You can then unzip the .fzpz file to modify the above files to change the part (although that is not easy to do.)
Peter