Win98 Upgrade to Win98 2nd Edition

Does anyone know if there is an upgrade available to go from Win98 (SP2) to Win98, 2nd Edition? I have 2 pc’s, one with each of the above, and suspect an incompatability between the two is keeping me from implementing my wireless network via a Linksys 4 port router. I am unable to access the internet from the Win98 (SP2) version.