>Hi,
>It is Win98 OS :(
>There are 2 clients connect to the file server. All of them are with Win98 OS.
>
>Do you think WinXP is better beside of Win2K server version?

BOth W2K and XP are better than Win98. Personally, I'd give the nod to W2K, and you'll also avoid that obnoxious 'installation wizard'. BOth have the 'phone home' spyware, though.