Thanks a lot for your response. I am sorry for not knowing how to access the Knowledge Base prior to submit my request.
Unfortunately, I could not find anything on the 75 pages on the KB related to a TCE virus. I recognize that it may be due to my computer illiteracy (it took me awhile to discover that KB meant Knowledge Base because I went to My Profile> Customer Support>Search> KB but it showed no results. Finally, somehow my brain started to work and instead of KB, I typed "Knowledge Base" and bingo!, it worked.)  Anyhow, I decided to forget about the TCE.
I really purchased the 707 because I thought it should be somehow more advanced that the 727, but it was not the case.
One feature I miss is the cockpit crosscheck using the Shift+ ~ .
Anyhow, I like the aircraft.