DDE related question

["Romi Ghose" <r.ghose@xxxxxxxxxxx>]

Is there a charting software that can:
1)  connect to a DDE source that just refreshes with new data and does not
have the capability to retain past (history) data?
2)  chart any (and I mean ANY) data, the DDE source brings in (ie, NOT
limited to only fields like OHLC, bid/ask, or date/time),
3)  update by retaining past (history) ticks (ie, NOT just refresh the same
tick on the chart),
4)  allow code writing for indicators?
5)  and perhaps an option to save the ticks at the end of each day in a file
or database that can be manually purged periodically?

Excel chart is capable of 1), 2), 4) and also 5) but not 3).  Perhaps there
is a tool/utility out there that can make Excel capable of 3) ???