Actually IE 4.0+ slightly changed Win95 looked, but not ran (tool bar icons, smoth fonts). It sure did some upgrade for certain Win95 components, but not for kernel. not likely. (it was free, remember
About Office XP, I haven't noticed of any visible changes in W98se ???, but sure it changed things, like Office2k upgraded IE,W98 installer, ...
Have you noticed, that every new Office pack upgrades IE for newer version. What's for ??? I don't like it. I switch to Opera
Cheers
Chef