installing win98SE over win95
 

my dad has win95 and i want to upgrade it to win98SE with my win98 CD... He says that it will screw everything up... Is that true? When you do a windows upgrade, does it mess up files? (in other words, is it a clean upgrade or would it be better to delete windows and install windows 98SE?)

Thanks

You could do an upgrade to 98, however I think that everyone would agree that it is a good idea to do a clean install.

would it make the os much slower if it was upgraded and wasn't a clean fresh install?

Not slower, but it would avoid any conflicts. Which can be a major pain in the arse.

what kinds of conflicts?

It's almost impossible to tell, which is why a clean install is a much better idea.