All I can suggest is that you start from Windows download page here:
as Microsoft no longer support 98 or ME. Strangely you can get a complete package for updating W2000 - now SP4 and hotfixes Rollup1 v2 for that but haven't been able to find the equivalent for ME.
W2000 is due to lose support in the next few months too, but I see no reason for a company that makes approaching a $bn a day not to leave a update rollup package available on its server for folk that can't afford to upgrade every time MS want to introduce another 'incomplete' new system without completly fixing the inherent faults in the previous faults.
Can you imagine a garage selling you a car that needs missing bits added constantly turning round and saying "I can't be bothered fixing my own handiwork anymore, but I'll sell you a new one that guzzles more gas and will need bits updated constantly, too!" A bargain.