Microsoft Windows 2000 (Computer programs) 4 Operating systems (Computers) 2 Computer programs 1 Computers 1 Internet (Computer network) 1 Microsoft Access 2000 (Computer programs) 1 Microsoft Excel 2000 (Computer programs) 1 Microsoft Powerpoint 2000 (Computer programs) 1 Microsoft Windows 2000 network 1 Microsoft Windows 2000 server 1 Microsoft Windows 98 (Computer programs) 1 Microsoft Windows NT (Computer programs) 1