Moved to Malware Discussion > Home User Assistance for better attention.
I see that Technical Support have withdrawn all DOS Scan instructions from their FAQ lists. It's a thing of the past really.
What is the name of the infection you are trying to tackle?
You could take a look at this too if your Windows 7 is x86 (32-bit): https://community.mcafee.com/thread/6923?start=0&tstart=0
ah thanks for answering before i get started
but its just something i'd like to do for a routine scan to ensure the safety of my computer, really. in my opinion, scanning in dos (safe mode to be exact) is the safest way to go but it seems like no one has really had a good answer as to how to do it.
McAfee can be run in Safe Mode. Just boot into it and go to Computer (My Computer in XP) and right-click the drive and select Scan. You'll see activiity only in the taskbar icon but hovering over it will give progress.
You can also right-click a file or folder and do the same thing.
Some anti-malware applications can be run in that mode too, and even can be updated in Safe Mode with Networking, for example Malwarebytes Free.
There's also a tool being developed for suspected baddies to be submitted to McAfee for a solution, called 'GetSusp'. To find out about it join their private group: https://community.mcafee.com/groups/getsusp30-beta-feedback
Regular submission methods exist too of course: http://www.mcafee.com/us/mcafee-labs/resources/how-to-submit-sample.aspx or https://www.webimmune.net/