I'm using
Jude for part II. So far, I'm quite satisfied with this free tool.
Before that, I've tried a few other tools like rational rose, ArgoUML and visual paradigm. Rational rose was not flexible enough for me to draw the sequence diagrams. ArgoUML and Visual paradigm caused my system hanged.
So in the end, I've settled down with Jude.
Joyce
[ July 10, 2004: Message edited by: Joyce Lee ]