Please post the model number of your TV, and I will check how you can connect your Zoostorm W76TH to it. By the way, in case you don't know, your Zoostorm is actually a rebranded Clevo, a major Taiwan computer manufacturer.If you don't already have a manual for yours, it is available free online or to download from the Clevo website, which you can easilyyou can easily find it on on one, you can get it from here. You need to look for M74xTH/76xTHserial in the drop down menu.
That is the correct manual for your model. CLEVO - Download
You don't need to search the manual to sort out your problem. Don't buy any more cables from wherever you have been getting them.They are expensive in the stores, but dirt cheap on Ebay.Less than £2.