I saw few.
Try to look at the following threads:
Excel:
-
Working with Excel (tools, indicators, conversion ...) is
here;
-
COT Data Excel Sheet is
here;
-
Save Data To A File thread;
-
forex data converters thread and some good converters on
this elite section post;
-
MULTI FIBO CALCULATOR with DDE off course: original
thread.
-
FX risk calculator with DDE is
here.