Content Advisor Settings & 98 Upgrade

My cousin is going off to college soon so he gave my dad his old Sony Vaio PC. We had to buy a power supply to get it working, and we found out that it has Windows 95 on it. Somehow between my cousin and my dad they found out the password to log in (he didn't want to just click cancel all the time). Now he can't get to certain websites because the content advisor says "The Website has no Rating." They can't get that password figured out, so is there any way to reset it?

Another thing, my dad wants to upgrade from 95 to 98, and I was wondering if there was any way to just upgrade on the net, or with a disk without having to reformat and lose all his files? Thanks for any help in advance!

Alex