Hi splorff
I can strongly recommend that you subscribe to Tradestation charts - now version 8.2. Tradestation has got to be one of the best, if not the best charting platforms around. It is better than esignal and sharescope in my opinion, and esignal and sharescope seem to have had better reviews than Sierra Charts and other 'budget' chartingh services.
Tradestation covers all US markets, which is fine for you if you trade the Dow.
If you can afford to trade £100 per point on the Dow, you obviously have a bit of money tooked away, maybe you won the lottery, maybe you have built up to earning the right to trade this size, through regular consistent profits and compounding of profits, or perhaps you have worked hard through highly paid jobs and are now trying your hand at trading.......I don't know.........
but paying a bit more for a better charting service is worthwhile. In any case tradestation 8.2 is not expensive.
Please don't think i am being funny, I only have your interests at heart, but as people have said, £100 per point is a very big positon to trade, and on must be aware of this. From the questions and comments you have posted on this thread, you do not give me the impression of a person who is an advanced trader - .i.e. you traded the Dow at £100 per point via a dial-up internet connection for starters, you were trading with Finspreads with a 6-point spread on the Dow, whereas you could have had a 1-5 pip spread at worldspreads, and your questions/comments charting packages..............
Please don't think I am being funny or trying to sound patronising, you may well be a highly profitable trader with a long history of success. But if you are a person who has money to spare, but doesn't as yet have a great command of the world of trading or financial markets in general, no matter how deep your pockets and how big your bank balance, wouldn't it be better, and show a more disciplined and strategic path of development to trade much smaller sizes - i.e. £5 per point or less, and earn the right to trade at £100 per point through consistent profits and compounding of profits?
Whether you are trading £1 per point or £100 per point, the trade size is unimportant, I think it is much better to think in terms of points/pips profit/loss and not ££££££££££££££££££'s - no matter what stage of a trading career you are at.
It is not the size of the trade stake sizes, and £ profit/loss that matters or impresses, it is the number of points profit/loss, the discipline demonstrated in ones trading plan - ie. 1-2% maximum capital risk per trade.
Therefore in my mind, the trader who makes £100 per week trading at £1 per point, always sticking to their maxium capital risk per trade, never letting their maximum stop-loss level pass them by without exiting their trade, is a far more successful trader than the trader who trades at £50 per point, and makes 20 pips profit per week - if both of the traders traded on the same timeframe, and used the same stop-loss sizes.
I can also recommend you get a UPS (universal power supply) which give you a few minutes of back-up battery supplied time to exit any trades in the event of a power failure. Belkin do some some good ones for about £35, Mine has 6 plug sockets, 3 of which provide battery back-up, all 6 are surge protected.
All the best.