you do not want windows 10 32bit
If you are using an older program this is what you have to do
Control Panel\All Control Panel Items\Programs and Features
uninstall the program
restart pc
now the installer file or cd right click on it and select compatibility mode
now you need to know when this older program was created, if it was XP then select to install in XPsp2 or XPsp3 mode. after it installs check the program and see if it works, if it does, select in wizard to save settings and finish it out and restart pc
if it doe not work select it worked on a previous version and then try windows 7 mode