Please provide the virus program and firewall you're using.
Dell 964 printer connected with USB Cable, correct?
Download the System Information Tool If using Vista/Windows 7, the tool needs extracted. Once extracted, right click on sysinfo and run as administrator.
If using XP, double click on the tool, then double click on sysinfo.
Allow this past your virus program and post the information back here.
Original poster, If you have solved your problem, can you please mark the correct thread(s) with your solution. Thanks
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#MicrosoftMVP - Windows Expert-Consumer April 1, 2012 to March 31, 2015