You should be able to find it's location using the following.
Login as root and from the root folder enter the following command.
find . -name httpd.conf -print
It will find all occurrences of the file.
As for upgrading to version 3 of MT, you would have to update it yourself. There are many MT users here that can offer help if you get stuck.
TCH does not install 3rd party scripts for users.
You can purchase the hosting account at anytime and start getting it uploaded. Just enter the domain name you will be using.
I do not know how long the transfer process will take so hopefully on of the other TCH guys will chime in here.
I don't know how many there are but you may request a skin change through the help desk (link above).
That is the IP address of the server you are on.
You would have to use the help desk to get this one answered.
To run a trace route do the following:
1. Open a Dos prompt (on Windows NT/2000/XP do start|run and enter CMD and tap return)
2. Enter tracert yourdomain.ext
3. The last site displayed will show the server number you are on provided the trace route can complete.