Ed..
You haven't mentioned which variant of "W32/Ramnit" McAfee detected. Have a look at how McAfee describes "W32/Ramnit.f". Note the date of discovery ("f") reflects yesterday's date. In other words, that specific variant was added recently.
As is noted here (and elsewhere), "the safest solution and only sure way to remove it effectively is to reformat and reinstall the OS". If another moderator or member has another way of approaching it, I'm sure they'll chime it.
What I would FIRST suggest doing. I see you also posted at a forum, which offers "Virus/Trojan/Spyware" help. They make use of HijackThis and various tools we don't utilize here. I have NO doubt, when they read your post from this morning, they will recommend you post the appropriate logs. If they feel a reformat or install is in order, they will suggest it.
Best of luck..
Carol
This started yesterday on our Windows Server 2003 machine running Citrix.When a user logs on, it opens up 2 IE windows (Internet Explorer
. Then if the user tries to open up an Office product (Word, Excel, Outlook...version 2003), it opens up another 2 IE windows.

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