there's 2 type of installer file extension for ppc, .exe and .cab file.

[.exe ] file - you need to sync the ppc with your computer first and execute the .exe file to install it, however there some .exe file where you need not to install, just copy the .exe file and run it straight from your ppc

[.cab ] file - just copy the file to your ppc and install it from ppc itself.

if in any case you can't run the installer after trying both method, pls check the .NET framework that you have, always update to the newest one