I found that all Windows 98 machines can all access eath other in Microsoft Windows Network. But there are two machine installed Windows 98 could not be accessed by Windows XP or Windows 2000 machine in domain environment. Only the two machine appears this situation. Other machines with OS 98 can be accessed by Windows XP or Windows 2000 and their's printers can be added.
I have installed other protocol like SPX/IPX and NETBEUI in the two machines. But result is still same as before. Any help are greatly appreciated.