what you need to do first is give both the computers the same workgroup name such as 'HOME' or 'MYNETWORK', it doesnt really matter as long as they are both the same, right click my computer, go to properties and u should be able to change the workgroup name there.
then u need to assign each of the computers an I.P address in the network properties, u should be able to go to network in the control panel.
-Windows 98 PC - 192.168.0.1
-WINNT PC - 192.168.0.2
after u have added the I.P addresses ping the computers from each PC and see if u get a response, if u get a response they should be right to go.
I'm assuming that you're trying to connect the two computers to share Internet? Or do you also want to enable File Sharing?
Well assuming you want Internet...then you need Internet Sharing(this is included in XP and maybe 2000 but not previous windows like 98 and NT)
But you can use a program like AnalogX Proxy which you can find here: http://www.pcworld.com/downloads/file_description/0,fid,6759,00.asp
(Copy paste the link)
For file sharing, you have to enable file sharing first before you'll be able to see the files.
Check to see if you can see the host computer from the 98se computer by going to Network Neighbourhood and displaying entire network...If you can that means the computers are communicating
This sig is a virus, since I am not so technically advanced, it's a manual virus. If you can see this message that means you've got the virus, so please delete all the files on your hard drive yourself and forward this message to everyone you know!