You should only post once. But, I replied to your other post as well as this one.
You will need Windows 98 Upgrade disk since a Windows 98 full version cannot be used to upgrade from Windows 95.
Get the Windows 98 Second Edition Upgrade since it is much better than Windows 98.
Go to this eBay auction site, and only buy from vendors with 99-100% positive profile to prevent getting ripped off.
http://search.ebay.com/search/search.dll?query=windows+98+upgrade&ht=1&sosortproperty=1&from=R10&BasicSearch=
.
.
.
Can someone please help me. I have a gateway 2000 and I had put off upgrading! Yet when I was ready to do so I could not find an upgrade. Yet my cousin had a disk with 98 but it will not work on my computer. It says I ALREADY have an operating system get 98 upgrade! Yet people are telling me it can be done!
Please help

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic