Hello Dnutter,
Sorry to hear about the problem with the computer tech! Makes me wonder how some people get those jobs in the first place.
Just wanted to mention that if you are thinking of going the TC route (which is what I did), you will also need to be able to import content from 2006 since TC has a limited amount of built-in content. I have not received my copy of TC3 yet so I am not commenting on that specific version but when the TC plan was originated, it was stated that each release would only contain the required content for that specific route. If you plan to download, say, a locomotive designed for 2006 into TC and it requires the built-in engine configuration, sounds, cab or any other built-in, you will need 06.
I actually think it is a good thing since I create almost all my own content and download what I can not create or in most cases is superior to anything I could hope to produce. It also keeps the database small and rebuilding it takes a very short period of time compared to 06.
With the built-in items in mind, anything you create now in 2006 can be moved over to TC. When the DHR was released, I downloaded and installed it directly into TC. I did have to move a small number of items from 06 and correct a few config.txt errors but the route runs fantastic in TC compared to 06 or even 04!
So, I hope you re-install your 2006 and continue to create content until you feel you are ready to make the move to TC or 2009 when they are available.
Have Fun!
Brian