Technomate tm 6800 HD system setup...

Hi guys, Just need a little help due to me being a total satellite noob !!

Ive won a system on Ebay and ill pick it up tomorrow heres what it is :

Receiver - Technomate TM-6800 HD
Dish - Technomate motorised dish system with a TM-2200 Super DiSEqC H-H motor
My location - Southampton,Uk

Now the help i need is :-

1) Where the hell do i put the dish ? (south facing wall ?)
2) What satellite am i initially setting it at (remember its motorised dish and i dont have an electronic finder)
3) Is this 6800 box any good ? and is £36 for the receiver box and motorised dish a good price ?

Thanks for reading and many thanks for any replies :)
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