I'm searching for a clear step by step tutorial to up-load routes
Assuming Content Manager works the same in TS2010 as it does in TS12:
Look up the route in CM
Right-click on it
Select upload
Deselect dependencies (assuming you did not create any own content for the route)
The route shows up in a list on the left. Click upload again
Read the text; if you agree then click okay, if not then you will never upload anything
Give it some time to run.
If you gave it a few try's and can't get it to work: Come back to the forum, give us a detailed description of what you did and where you get stuck. The more details, the more chance we can help you.
I'm searching for a clear step by step tutorial how to make a thumbnail
About thumbnails, take your time and read this topic (it really has all information):
http://forums.auran.com/trainz/showthread.php?6660-How-to-add-thumbnails-to-assets
If you gave it a few try's and can't get it to work: Come back to the forum, give us a detailed description of what you did and where you get stuck. The more details, the more chance we can help you.
The whole process really is not that hard, but as everyone the first time you must be making 1 silly mistake halfway that got you stuck

.