Just for reference the mini dow symbol with MyTrack/Sierra is Q`M for the June contract.
If you need the index charts this can be either INDU, or DJIA.
edit-just realised you want the IB info! - doh!
I guess i should have said i just want the DOW index in sierra (via IB feed) for reference to compare against the YM futures which i can get no problem. So in general terms i am just looking for the best symbol to use to enable me to chart the Dow Jones Indutrials Index.