Following my last thread ( 16-bit MS-DOS Subsystem error message on startup) I thought everything was going fine, with no warning messages on startup, but now I have another problem. When I try to install Windows 2000 Service Pack 4 the 589kb WebPage Dialog window gets about half way along its installation bar, the Inspecting current configuration window gets nowhere and eventually I get the message Not enough storage is available to process this command. Running virus checks (again!) throws up references to winxpM1156.exe and Ica3.exe both with the message This archive contains one or more infected files! Infected files in archives will not be deleted or repaired! Are these part of the same problem, or different ones? If it makes a difference, I intend to use the computer only as a reserve standalone or on the internet, i.e. not as part of a network, so any legacy network software can be safely deleted. Any ideas, please?