Online Global Score Boards

Hello Torque Community,
This is my first time on the forums,
Just bought the Torque X 2D Licence and an XNA memembership,
So diving straight in the deep end, but thats the only way your gunna learn.

Just some issues I wish to cover and hopefully you can help me?

Where would I go to start up an online global scoreboard,
I understand you would need a running server, but does anyone know any links
for any tutorials on how to do soo or what hardware and software is needed?

Basically the game concept is similar to sonic the hedgehog, getting across from point A to B
as fast as you can, with a variety of levels, the faster you complete each level, the time is then added
up towards the end, and if you manage to complete the game with the shortest time, your Gamertag and Your Time will be then uploaded onto a scoreboard list or should I say the fastest times...

Now I have no clue, on how to set something up like this, even though it sounds simple...
Would really appreciate some sort of step to take and learn from there...

Also off the subject, what is the max Jpeg, Png ext-. size you can bring over into Torque X Builder 2D...

Many Thanks

Sol