There's a "bug" with Win 98 that gives you out of memory errors with more than 512MB of RAM. If you Google "Win 98 512MB limit workaround" that should get you the solution you need. Also, if you don't have a modem, how are you connecting to the internet? If you are already connected, then the modem isn't necessary.
It is accepting 1 gb ddr. And I do have a lan connection with firefox 1.5 installed. Firefox is the way I posted but when I click on ie it gives me set up dial-up modem cancel next I have loaded ie 5 or 6 before and it didn't give me that message When I try to install ie 5..6 it says not enough mem.