The initial release of IBTrader, an open source order entry/simulation interface utilizing IB API is available at http://ott.sourceforge.net/

Quote from trader42:
if you have Java installed (as required by TWS), than jar files are associated with java.exe
you could also open a command prompt and run in the directory to where you downloaded the file:
> java -jar ibtrader.jar
did you try running the webstart version?
it is pure Java so should be OK on NT4
trader42,Quote from trader42:
The initial release of IBTrader, an open source order entry/simulation interface utilizing IB API is available at http://ott.sourceforge.net/
Quote from Mishka:
webstart version?= I don't think so.
Quote from Mishka:
can you be more specific what I need to install or can IBTrader be in different format