Could you tell me it is possible somehow to download market data from TC2000 ? 

For example, I want to see BAC (Bank of America)  in 1 min time frame (or tick by tick will be even better )  for the past last week in xml format. 

You can export the data on the chart in TC2000 version 12.5 by right-clicking on the chart and selecting Export Chart Data.

How to export your chart data

This will export using the time frame on the chart out to the number of bars on the chart and will only export one symbol at a time. This would not allow you to export a week of 1-minute as the trading day starts with 500 bars of data available. There would be 390 additional bars by the end of the trading day, but it would still be less than 3 trading days of data.

You could build up bigger amounts of data by exporting and then merging the new data into the old exported data in some fashion.

Note that while you can export entire WatchLists instead of exporting a single symbol at a time in TC2000 version 7, there would be no way to export intraday data.

Exporting data to text format - comma, space or tab delimited